I have been trying to be the best I can be but it doesnt seem to affect him, he has decided to turn a blind eye to it. So I am telling myself he needs to go on his own journey to figure out the root of his pain and depression is inside him and not me.
Arsh,
Do not be the best you can for him. Do that for yourself. Don't even pay attention whether it affects him. It does, regardless whether he shows it.
He does need to go on his own journey. Let him do it. Don't pay attention to him too much. You have to go on your own journey too.