The Present Process (Michael Brown)
A good friend of mine recommended me this one, when my life looked way too complicated to me.
So, I took the challenge (I didn't have much of inner peace to lose:))) and accomplished not only the theoretical part of it, but the whole Process (let's say, a Boot Camp Self-Development) as well. Several times. It was soooo challenging, but, as the author says, it's not about feeling yourself better, it's about better feeling yourself:) Result: more clearness in my feelings and behavioural patterns, as well as better connection with my real centre, real me.