Selfishness inevitably leads to dissatisfaction and disappointment, because desires are endless. The problem of happiness is, therefore the problem of dropping out desires.

Desires, however cannot be effectively overcome through mechanical repression. They can be annihilated only through knowledge. If you dive deep in the realm of thoughts and think seriously for just a few minutes, you will realise the emptiness of desires.

Think of what you have enjoyed all these years and what you have suffered. All that you have enjoyed through life is today nil. All that you have suffered through life is also nothing in the present. All was illusory.