These are in no particular order. Stick in the “le’havdil elef alfei havdalos” where appropriate.
The Definitive Book of Body Language, by Allan and Barbara Pease. If you want to know how to read people, this one is really good.
The Road Less Traveled, by M. Scott Peck. The best book I’ve ever read on relationships, dependency, love, etc.
If you want Jewish Philosophy, inspiration, etc., Rabbi Jonathan Sacks is an amazingly prolific writer and has lots of great books out.
If you enjoy Jewish history, I happen to really enjoy Rabbi Shmuel Irons. He doesn’t have a book out but audios of his lectures are available online.
Totally random, but H.L. Mencken’s “The Philosophy of Friedrich Nietzsche” was a really interesting and fairly easy read.