God cannot give us happiness and peace apart from himself, because it is not there. There is no such thing. C. S. Lewis
There is humility in growing & learning. We don't know-it-all, nor should we.
Give up on self-sufficiency & journey with God.
Don't grieve God. Don't break his heart. His Holy Spirit, moving and breathing in you, is the most intimate part of your life, making you fit for himself. Don't take such a gift for granted.