I'm a big fan of self help from a place of knowledge and understanding, so I recommend educational books.

One I learned a lot from is 'The Boy Who Was Raised as a Dog' by Bruce D. Perry, M.D., Ph. D. and Maia Szalavits. Great insights into how brains our minds develop with different types and amounts of stress.

Also, probably the best financial advice is how to save money, and few books have more tools for that than 'The Tightwad Gazette' by Amy Dacyczyn.

Both do have a US focus, just FYI, but the basic concepts are applicable to nearly everyone.