This teaching is for those who want to conquer the restless mind, but they realize that the mind is so difficult to quiet down, that there will be ceaseless distracting random thoughts occupying the mind, especially whenever they try to sit down quietly limiting the physical movements and refraining the senses from going out chasing after the object of the senses, to train the mind in concentration and meditation.
It's a common reaction of all the untrained impure minds when the physical body is being restricted from bodily movements and the mental habitual activities is being restricted, there will be random thoughts bubbling up to the surface of the mind. It's part of the purification process. People should continue the practice by learning how to be aware of all these random thoughts without association, attachment, identification, craving or aversion, judgment and expectation, and allowing all these random pleasant and unpleasant thoughts arising and passing away, to clear up the past accumulated imprints. People expect that when they meditate, the mind will be free from any thoughts, and so, they'll get very disappointed and demotivated after a few attempts trying to concentrate or meditate, they realize that the modification of the mind is even more agitated and violent whenever they try to concentrate or meditate. And without correct understanding, many people would give up and prefer to just live everyday life as they are, 'happy happy go lucky', be good, do good, without the need to deal with the unpleasant behavior of the mind that they don't like to confront with. And that's their freedom.
The biggest element in aid to conquer the restless mind is the observation of silence, of seclusion, solitude and renunciation from worldly social relationships, activities and interactions.
Some people think that those who want to conquer the mind should take up the challenge of living and mixing among the society, in order to allow the mind to practice concentration and meditation in everyday life having to deal with all kinds of challenging condition and situation, distractions and disturbance, while learning how to remain equanimous without being affected or determined by all the challenging condition and situation in life, without generating craving towards the pleasant life experiences and without generating aversion towards the unpleasant life experiences. And there's nothing wrong with that. But what happens? After many years of 'trying' to practice yoga and meditation to conquer the restless mind, but the mind is still restless, or even more restless under the influence of ignorance and impurities.
Some even say that it's very easy to be calm and quiet being in solitude and seclusion without dealing with other beings and worldly affairs. They think that one doesn't need to deal with pleasantness and unpleasantness, craving and aversion, distractions and disturbance, actions and reactions, when being in solitude and seclusion. What they don't know is that most minds will runaway from solitude and seclusion after some time, like fish out of water, and the modification of the mind is even more agitated and violent being restricted from worldly social relationships, activities and interactions that keep the mind stimulated, entertained, busy, or restless. That's why so many people will say that meditation is very difficult, or they can't meditate, or they don't like meditation, or they don't like to observe silence, of solitude and seclusion.
Whether one is surrounded by many other beings and happenings, or one is alone in solitude away from happenings, this mind has to deal with the impermanent and selfless changes of the physical body and the ignorant impure egoistic modification of the mind. Whether the mind is free, or not free, it's always right here and right now. When the mind practices concentration and meditation, it's always alone, regardless of whether there are other people around, or not.
Do not blind-believing or blind-following any teachings from anyone or somewhere, including all the teachings here. Contemplate and inquire the truth of all teachings and attain self-realization of the truth of all the teachings via direct experience.
Take note that living in the world and mixing in the society are two completely different things. Geographically and biologically, one will have to and always be living in the world, otherwise, this body will not be able to survive for long, but at the same time, know the importance of observing silence, of maximum solitude and seclusion, renouncing worldly social relationships, activities and interactions, in short, refraining from mixing in the society.
While living in the world, one will still have to deal with the impermanent and selfless condition and situation in the world that is ever challenging, and developing the strength of non-association, non-attachment, non-identification, non-craving, non-aversion, non-judgment and non-expectation, and one learns how to conserve energy and not wasting energy into worldly affairs/activities/interactions that derived from ignorance and egoism, as well as empowering/feeding ignorance and egoism.
Observing maximum solitude and seclusion while living in the world, and renouncing worldly social relationships, activities and interactions doesn't mean that one is completely isolated from the society and not performing any actions in the world. One can be performing unlimited selfless service in the world to benefit the society efficiently, but being free from mixing, or socializing, or accumulating relationships. One is care-less towards the worldly affairs, but can also be performing actions that benefit the world at the same time. Being compassionate towards all beings doesn't mean that one has to be in a form of relationship with all beings. One can be kind to others without the need of knowing or contacting with the others. Contemplate on this, and be free to observe silence while living in the world and performing actions in the world.
For the 'first class' students of Dhamma, which are very few of them in this world, they don't need to observe silence, of solitude, seclusion and renunciation from worldly social relationships, activities and interactions, as they are already grounded firmly in Dhamma. They can be mixing in the society like everyone else, behaving like everyone else, but their minds are ever pure and quiet. They don't need to practice concentration or meditation at all. They are not separated from meditation. There's no in or out of meditation.
For the other students of Dhamma, which is the majority of us, we do need to observe silence at some stage, of maximum solitude and seclusion, and renounce worldly social relationships, activities and interactions, as whether we are aware or unaware, the mind is constantly absorbing all the inputs of sights, sounds, smells, tastes, sensations and thoughts/imagination/projection/dreams, all the time, unwittingly. All these endless accumulated inputs are the ceaseless random thoughts that bubbling up to the surface of the mind during the practice of concentration and meditation, and many minds that haven't develop a strong foundation of non-association, non-attachment, non-identification, non-craving, non-aversion, non-judgment and non-expectation will be greatly disturbed, distracted and demotivated by this purification process. And this will never come to an end, unless we start reducing and limiting all these unnecessary mind inputs deriving from all kinds of worldly relationships, activities and interactions.
It's like someone tries very hard to clean up the rubbish bin, but somehow, rubbish keep pouring into the bin, from someone and somewhere, endlessly. The bin will never be cleaned. The untrained impure egoistic mind is like a rubbish bin, taking in all kinds of rubbish (mind inputs) ceaselessly, unwittingly. And yoga and meditation practice of silence, solitude, seclusion and renunciation, is the most effective and practical way to free the mind from being a rubbish bin, and it's not about to be a clean rubbish bin, but to realize its nature of namelessness, formlessness and attributelessness, that it is neither a dirty rubbish bin nor a clean rubbish bin.
Perform this test to know how the mind works. Sit down without moving the body and limbs, closing the eyes, and observe the natural breath coming in and going out for a few minutes. Very soon, unwittingly, random thoughts will arise and occupying the mind. And one will realize that all these random bubbling thoughts are the strongest imprints during the day, or from the last few days, or even from weeks/months/years before, or even forgotten.
Even Siddhartha Gautama Buddha and Swami Sivananda also had to retreat from the society to be focusing on their practice for some years in solitude, restraining the modification of the mind and attaining liberation. And then they came back to the society to disseminate the Dhamma to the other suffering minds whom in need of the Dhamma to be free from suffering.
By reducing and limiting the mind inputs not just allowing the mind to be purified effectively, but it also helps to develop a great mental strength that allows the mind to be uninfluenced, unaffected, undisturbed and undetermined by all the names and forms that the mind perceives through the senses. At this stage, the mind is safe and free to be mixing in the society and live everyday life like everyone else, but the mind is ever pure and quiet.
It's everyone's freedom for what they want to think and believe, and what they want or don't want to practice.