Story where the MC anti social, down in life but rises and succeeds in some endeavours like relationships or any other thing.

Hi guys, basically the title.

I need a book suggestion for a story where the MC is not sure of himself. Low in confidence and passion. He cannot be his real self because of low confidence. He is just getting by in life. No inspiration to create a spark in him. He barely has any friends. He is not good at social life.

Then he goes through an arc to better himself and gets more confident about himself. And finds his sense of self. He can finally be assured and free with people.

Please help me find a book that contains some of these plot points.