Best book to help my mental health

I've been struggling a lot with my mental health and I feel like I should start reading a book. I wanna be enough for myself and be alone and happy. I also wanna understand which relations to keep and to evaluate my current habits and improve myself. I get too clingy, hold on to toxic people, overthink alot, become too obsessed. I wanna be a better man so that I can understand who to love and who to say goodbye to without my attention seeking clouding my judgement. By attention seeking I mean if someone shows me a lot of attention ill develop a crush and shit. So yeah, help me out coz I wanna heal myself because I've been through a lot I don't have a dad so yea maybe a book that helps with all this. PLEASE HELP ME OUT