Heaven is not the motive of Sanatana Dharma

One has to return therefore to the spiritual universe where life and everything is eternal.

The living being, having forgotten his spiritual identity, is seeking peace of mind in matter. This is an impossible fact. A living being of the water cannot be happy on the land at any cost. Similarly, the spirit living being cannot be happy in material existence. He must go Back to Godhead the Supreme Spirit if at all he wants to be happy.

Therefore every living being's duty or dharma is to go back to Godhead which is confirmed in the Bhagavad-gītā as follows:

Going back to the Supreme Lord should be the motto of universal religion. Heaven is not the motive of Sanatana Dharma.

Oṁ Tat Sat.