Possibly the best most helpful and easy to understand guide to make life more fulfilling by using the things that we can control. As we live in such a technologically advanced time, the explanations make these principles easy to follow and make sense of, even a child could make these principles work for them.
I carry this book with me and reread it all of the time. When I question myself without being able to understand why I am in a slump, I know that just reading this book again will make the answers I need become clear.
This is by far, one of the best books that I have ever been lucky enough to randomly purchase.