You may be thinking that there is a reason for everything, that we are here for a purpose, that we HAVE a purpose. But what if you are wrong? What if instead there is nothing except randomness and chaos?
What if you are just the result of stardust, luck, and the copulatory act of two casual animals in a specific moment of time?
You may create your one purpose, and maintain your mental health with that. But never believe that you have been chosen by something or someone.
You are choosing yourself, in a way or another.
Think about it.