It might be hard to believe but this short book really works.It worked for me and about a dozen friends and family including my dad in his 60s. Read the reviews section for it on Amazon, review after review stating that the book changed their lives.

Edit: There are now almost 7000 reviews with the vast majority saying the book worked. The last time I checked about 10 years ago there was only 400 or so and that was very impressive then.