There is neither right nor wrong that there are many people strongly believing in and promoting "The power of thoughts" or "The super mind power".
The thoughts are only 'powerful' upon turning into physical efforts/actions/activities that could be either constructive predominant or destructive predominant, depending on the state of mind, whether there is presence or absence of wisdom or correct understanding, or the absence or presence of ignorance or incorrect understanding, or the absence or presence of grasping, or the presence or absence of self-control.
Power, of any kind, is neither good nor bad.
Power (to create, maintain, and destroy) itself is intentionless.
Power can be used for something constructive or destructive, and/or both. It depends on how the power is being used, wisely or ignorantly.
Regardless of something constructive or destructive, it is also neither good nor bad, as all actions will lead to respective consequences of actions that are neither good nor bad, but only being what they are, as they are.
Such as birth and death is neither good nor bad, however, under the influence of the veil of ignorance, most people would perceive birth (creation and existence) as something auspicious and joyfulness, and death (destruction and ceased existence) as something inauspicious and painful sorrow, except for the birth and death of something or someone that they strongly dislike and disagree with, then the birth and the existence of that something or someone is being considered as inauspicious and sorrow deserving, while the death and the ceased existence of that something or someone is being considered as auspicious and celebration deserving.
Most of the time, what is being recognized as 'good and right and meaningful and prideful' or 'bad and wrong and meaningless and shameful' for the minds, are not necessarily the truth of what things are.
Such as there are many minds are being manipulated and conditioned to believe in and aspire to be ceaselessly achieving and accumulating and hoarding (to create and possess) endless wealth and possessions and pleasurable enjoyments that are deriving from exploiting all and everyone and everything and the surrounding environment to the maximum (destruction), directly and indirectly, as the ultimate 'good and right and meaningful and prideful' thing to do in life.
One can develop and empower correct understanding and kindness while destroy and eliminate ignorance and consequences of ignorance in oneself, and vice versa, under the availability and utilization of power/energy/effort/action/activity, that also impact all and everyone and everything and the surrounding environment, directly or indirectly, constructively or destructively.
If the mind that is functioning under the presence of conscious and semi-conscious awareness, that has the ability and opportunity to be performing physical actions via the organs of actions and speech/expression, but it is unwittingly being over-powered, determined, influenced, or prompted by the ceaseless voluntary and involuntary ideas/thoughts/feelings/emotions/desires of craving and aversion/urges prompted by the intentionless survival instinct, under the absence of correct understanding or self-control, then the ceaseless random ideas/thoughts/feelings/emotions/desires/urges will be spontaneously turning into voluntary and involuntary physical actions/reactions/activities via the organs of action and speech/expression that will give rise to the consequences of action and speech/expression (regardless of constructive or destructive) that would impact all and everyone and everything and the surrounding environment in certain way, directly and indirectly.
And hence, many people think and believe that the thoughts that prompt/influence/determine the actions are most powerful, as it can determine the type of physical actions, or activities, or behaviors in certain way, regardless constructive predominant or destructive predominant.
That thinking and belief is valid as long as the mind is still functioning under the influence of the veil of ignorance, however, that is invalid upon the mind is free from the influence of the veil of ignorance, that knows Thyself, that is absent of grasping, or the idea of 'I' and egoism.
Under the influence of the veil of ignorance or under the absence of correct understanding, the mind is ignorantly, spontaneously, unwittingly, and reluctantly being over-powered and determined by both conscious and unconscious / intentional and intentionless / voluntary and involuntary / egoistic and ego-less / gross and subtle thought current/process/activity, a.k.a. the selfless impermanent limited and conditional restless modification of the mind, then the mind might be wittingly and unwittingly / intentionally and intentionlessly / randomly and deliberately generating ceaseless and boundless physical and verbal action/reaction/behavior via the organs of action and speech/expression being prompted/influenced/determined spontaneously by all those mental activities that might be constructive predominant or destructive predominant, and/or a mixture of both, towards oneself and others and the surrounding environment, directly and/or indirectly.
The thoughts are powerless, or the thought current/process/activity, or the restless modification of the mind under the state of consciousness and semi-consciousness, regardless of the tendency of good or bad, positive or negative, beneficial or harmful, constructive or destructive, and so on, that don't turn into physical efforts, actions, or speech/expression via the organs of action and speech/expression, are merely some selfless impermanent manifestation of names and forms in the form of thought waves/current/process/activities, that ceaselessly arising, changing, and passing away.
Actions are way more powerful than thoughts.
Thoughts initiate, prompt, give rise to, or turn into actions, or not, but the presence of the limited conscious physical and mental actions/efforts can influence and render the thought activities, or influencing and modifying and rendering the mind thinking behavior pattern, or the modification and the state of the mind in certain way or not in certain way, either constructively or destructively, even if there is certain degrees of inevitable limitation.
No doubt that actions are being prompted by conscious/voluntary and unconscious/involuntary ideas, or thoughts, or feelings, or emotions, or memories, or wild imaginations, or inspirations, or aspirations, or desires, or urges, or survival instinct, and so on. But all those mental activities don't necessarily turn into physical efforts, or actions, or activities that give rise to the consequences/fruits of actions, especially under the presence of correct understanding and self-control, where the mind has the limited and conditional conscious awareness, conscious freewill, conscious initiation, conscious reasoning, conscious understanding, conscious filtering, conscious choice making, and conscious action taking, to act in certain way or not in certain way - Not being over-powered, or determined, or prompted spontaneously or unwittingly by the restless voluntary and involuntary mental thought activities, which can also become the predominant power that can be influencing and modifying and rendering the limited and conditional mind thinking and behavior pattern to be in certain way, that would be beneficial to all and everyone and everything directly and indirectly, selflessly and ego-lessly, unconditionally and indiscriminately.
That is exactly what the yoga and buddhism teachings and practice is about - To conquer/quiet/thin-out/slowdown/annihilate the restless modification of the mind, by the mind itself, not being over-powered or determined by the ceaseless manifestation of thought current/activities/process that is selflessly and non-selfly existing and functioning as what it is. - Yoga Citta Vritti Nirodhah
Just by thinking and desiring very hard repeatedly and continuously about having, or owning, or living in a house, but if without exerting any physical effort or action as well as under the availability of all kinds of supportive elements and conditions for either building or buying a house that the mind is thinking and desiring about, the thoughts or mental activities will not be materialized. Such thoughts or mental activities are powerless. Which is neither good nor bad. Which can be either beneficial or harmful to oneself and others and the surrounding environment, depending on the state of the mind.
Such as if there are some constructive and beneficial ideas or thoughts or desire arising in the mind, but somehow, the mind under the presence of conscious awareness chooses to ignore those ideas/thoughts/desires, or the mind is reluctant or doesn't have the motivation, or courage, or willpower, or determination to turn those ideas/thoughts/desires into physical actions/activities/efforts for materializing all those mental ideas/thoughts/desires. Such as there is the idea/thought/desire of, "I should and I want to start exercising regularly," that doesn't turn into physical action/effort of performing some physical exercises at all.
Such as if there is ill-will towards someone or something arising in the mind, but it doesn't necessarily turn into physical effort, or action, or activity that actually causing certain harm unto anyone or anything, under the presence of correct understanding and self-control, then the ill-will or any kinds of impure thoughts/ideas/feelings/emotions/desires will just be coming and going in the mind, and don't give rise to any physical consequences.
What is even more powerful than actions and consequences of actions, is the presence of wisdom or correct understanding in the mind that is under the state of clarity upon the state of consciousness and semi-consciousness, where there is knowledge and understanding in the mind towards the selfless impermanent limited and conditional momentary finite existence and function of the mortal body and mind that is non-self, that doesn't even belong to the body and mind itself, where the mind that is conscious and semi-conscious, is consciously or semi-consciously aware of or witnessing all kinds of voluntary and involuntary thoughts/feelings/emotions/desires and don't desires/urges arising, changing, and passing away in the mind without grasping, without egoistic attachment, identification, desires of craving and aversion, comparison, judgment, or expectation, without being determined or over-powered or prompted spontaneously by the thoughts/feelings/emotions/desires and don't desires/urges to act, or react, or behave.
At the same time, such minds that are functioning under the presence of correct understanding have the limited and conditional conscious awareness, freewill, and effort or action taking, to be standing as a third party to be reasoning and filtering the existing ideas, thoughts, feelings, emotions, or desires and don't desires, and make conscious choices of choosing and turning which mental thoughts/feelings/emotions/desires and don't desires/urges into physical action/activity/expression, to be performing actions that would be benefiting not only the body and mind itself, but also benefiting all and everyone and everything and the surrounding environment directly or indirectly, while not performing actions that would be harming oneself and others and the surrounding environment, under the presence of clarity of thinking and correct understanding.
If the ceaseless thoughts/feelings/emotions/desires and don't desires don't turn into physical action/speech/expression via the organs of action/speech/expression, then there are no physical consequences of the ceaseless thoughts/feelings/emotions/desires and don't desires being what they are, however, if there is the presence of grasping, the mind might still be over-powered and disturbed greatly by the conscious and semi-conscious awareness/acknowledgement/perception/cognition towards all kinds of restless ideas/thoughts/feelings/emotions/desires and don't desires that ceaselessly arising, changing, and passing away, even if all those mental activities don't turn into physical actions/activities/efforts.
The entire wold of human beings will be in absolute peace, when all human beings are resting in the state of unconsciousness/deep sleep/coma, under the complete absence of conscious or semi-conscious awareness, a.k.a. the complete absence of all kinds of egoistic impure human's activities/actions/reactions/behaviors being generated under the influence of the veil of ignorance under the presence of conscious and semi-conscious awareness upon the state of consciousness and semi-consciousness, where all and everything are merely being what they, as they are, neither good nor bad, neither positive nor negative, neither constructive nor destructive, and that ceaselessly changing at their own respective cause and pace, governed by the intentionless attributeless nature's law of cause and effect.
Just by keep thinking repeatedly and forcefully about something doesn't 'make' that something happening or be materialized. One needs to perform physical action or exert physical effort to 'make' that something to be happening or be materialized.
Just by thinking repeatedly about "I want to know the answer of this doubt/calculation/puzzle/problem/non-understanding/happening" doesn't make the answer appears, but it is the continuous mental and/or physical effort of reasoning, or calculating, or solution finding, or problem solving, or inquiring, or investigating, that will lead the mind to see or know the answer.
That is why the world is continuously being in a state of mess, reflecting that there are many egoistic impure minds functioning under the influence of the veil of ignorance, where the egoistic impure restless modification of the many minds, of all kinds of random impure thought activities, are spontaneously/ignorantly turning into physical efforts/actions/activities that give rise to the consequences of all that.
Inquire the truth of everything, and be free.