Under the veil of ignorance as well as under the influence of certain worldly egoistic belief, the mind understood that the wheel of ceaseless births and deaths in different realms is about an individual immortal existence that is permanent, independent and unchanging was being born into the impermanent mortal world of names and forms residing in an impermanent mortal physical body to be under going impermanent worldly life existence that is subject to all kinds of physical, mental and emotional painful suffering, due to an 'ignorant downfall' that generates the 'initial karma seed' that had pushed off the wheel of ceaseless births and deaths of countless different life existence, transitioning in different forms, interchanging in different realms, according to the past and present accumulated inexhaustible 'karma' deriving from every single thought, desire, action and reaction that generate ceaseless cause that leads to ceaseless effect, and hence, the endless suffering of the wheel of ceaseless births and deaths that will never come to an end.
While in every single life existence, where all kinds of pleasant and unpleasant, agreeable and disagreeable, desirable and undesirable or enjoyable and non-enjoyable life experiences, conditions, situations, ties and connections and relationships are all governed by the past and present accumulated 'karma' deriving from good and evil deeds, and upon death of one particular life existence, it will then be reborn or reincarnated into another impermanent mortal life existence transitioning under different forms in the respective realms in accordance to the past accumulated 'karma'. And that, the wheel of ceaseless births and deaths of countless different impermanent mortal life existence transitioning in different forms, and interchanging in different realms, will keeps on 'rolling' until the complete clearance or exhaustion of 'karma', where the 'individual immortal existence' can finally exit the wheel of births and deaths in the impermanent mortal world of names and forms, to regain its immortality, its original form.
Inquire towards the teachings of yoga and buddhism about the beginning and the end of the wheel of ceaseless selfless births and deaths of countless different impermanent mortal selfless existence transitioning in countless different forms, interchanging in the different realms, that is happening within the selfless impermanent modification of the selfless mind.
There arise the first initial thought or the idea of 'I' born out of ignorance in the selfless modification of the selfless impermanent function of the mind being part of the selfless impermanent existence and function of the selfless impermanent mortal physical body.
That initial thought of the idea of 'I', leads to the rise of grasping/attachment, identification, and the desire of craving and aversion, that followed by all kinds of actions and reactions and impurities deriving out of egoism under the veil of ignorance, which then gives rise to the wheel of ceaseless births and deaths of ceaseless thought after thought, or the continuous restless stream of thoughts, attachments, identifications, desires, actions, reactions and impurities, of countless idea of 'I', attachment, identification, desire, action, reaction and impurity under different selfless impermanent forms or qualities, that gives rise to all kinds of different states of minds, or realms, where the selfless modification of the selfless mind continuously transitioning or interchanging in between different states or different realms, of inevitable restlessness within this selfless impermanent modification of the selfless mind, where all these selfless impermanent names and forms keep on arising, changing, and passing way in the selfless impermanent modification of the selfless mind, governed by the selfless intentionless indiscriminate nature's law of cause and effect.
The entire wheel of ceaseless selfless births and deaths of transitioning in countless different names and forms, and interchanging in different realms, is all happening right here, right NOW, in this selfless mind, in this selfless impermanent mortal physical body, in this selfless impermanent limited and conditional life existence.
Never give up. Never despair.
Just by understanding intellectually towards the teachings without direct realization towards all these, doesn't free the mind from all kinds of madness and suffering, due to the presence of the idea of 'I', ignorance, egoism, impurities and restlessness.
Keep purifying, keep disciplining, and keep quieting the selfless impermanent impure restless modification of the selfless mind.
Keep inquiring and attaining self-realization towards all these, to know Thyself, and be free from all kinds madness and unnecessary suffering that is not anywhere else but only in this selfless mind, due to the idea of 'I', ignorance, egoism, impurities and restlessness.
All these will passed away. However, before that happens, the selfless mind can be liberated from ignorance and its by-products and the suffering deriving from all that. Or else, the mind keeps hurting itself and all and everything, because it doesn't know and doesn't understand what is going on in itself.
Inquire the truth of everything.