Based on Bhagavad Gita Chapter 15, Text 07
Many popular self-help books claim that we will become happy if we just change our state of mind from negative to positive. Is this true?
Certainly, changing a habitually pessimistic attitude to a consciously optimistic attitude can help us feel better. But will it change the reality that all of us have to grow old, get diseased and die? Will it change the miserable nature of material existence where we frequently don’t get what we want and regularly get what we don’t want? Will it change the fact that all material pleasures are short-lived and so can’t satisfy our longing for constant happiness?
An honest answer to these questions has to be in the negative, as even a little contemplation on our own experience of material life will confirm.
The Bhagavad-gita (15.07) indicates that both the sensual and the mental levels are sources of suffering for the soul, whose original being or existence is beyond both these levels. At that trans-sensual, trans-mental spiritual level of being, the soul delights in an eternal loving relationship with Krishna, the source of supreme happiness.