Which books are recommended for refining one’s character traits?

Greetings,
I am a young man who has become more observant over the past two months.
I would like to ask which book is recommended for refining one’s character traits: anger, jealousy, and the like...
I feel that I have truly been "born anew," and I cannot continue in the same way I acted for most of my life (not that I was some wicked person, but the spirituality and the renewed awareness bring with them much better and loftier things). I feel some kind of obligation. I would be happy to learn about this subject and grow spiritually as well on the behavioral level.
Thank you,
Moti