The Success Principles
by: Jack Canfield
I know it's going to sound corny, but this book spared me from a nervous breakdown a couple years ago. I had gotten it prior to it's release and had applied a lot of it into my life. Then I went through a really tough patch in my life but I just used the principles in the book and was able to get my head back on straight. I had contacted the author, wanting to thank him for writing the book. He wrote back and is now using part of my letter to him as part of his lecture series.