We are born in this world only to learn lessons.

The entire Creation, Nature, belongs to God alone. Yet, man not realizing this, wants to possess all and declares, ‘This is mine!’ For this, he is born and dies repeatedly. If you want to attain the birth less state, you must leave all in this world. No one here belongs to us. Some time ago, I wrote a song where I tell:

This world is the happiest place 

Here no one belongs to another 

There are no differences or tricks 

This is ours that is yours! 

This is a verse from a much longer song that I wrote before. This world is the happiest place, where no one belongs to another. There are none of the differences of ‘our family, their family’. No tricks, no bargains! Here all is God’s Creation. I saw this happy world. Swami said we have come here to demonstrate the Purusha Prakrithi.
As man crosses each chakra, he will be faced with much opposition from his mind. It is only after all is crossed, does he attain God. There is no going back when he reaches this stage. This is what Sri Aurobindo writes of Savithri crossing each chakra.