If you have'nt read it or know what it is already, I'd like to recommend this fantastic book. I think its one of those books you just have to read.

Explanation of the book from Amazon: "Rooted in traditional Toltec wisdom beliefs, four agreements in life are essential steps on the path to personal freedom. As beliefs are transformed through maintaining these agreements, shamanic teacher and healer don Miguel Ruiz asserts lives will "become filled with grace, peace, and unconditional love."