I'm after a book for someone I know to help them deal with some emotional stuff they are going through and some difficult times in their life.

I know in the past I have found some of the buddah philosophies useful - from memory things like mindfulness and something about letting yourself feel the emotion instead of fighting it and then letting that emotion go - can't remember what that one is called.

Anyway, can anyone recommend a readable book about such philosophies?

Don't want anything to heavy or too deeply buddah but some of the basic philosophies as a bit of a self help if that makes sense.

Thanks.