Whether you believe in Self Help or not, it can help people to help themselves, there are a lot of stupid self help books around but thankfully there are some excellent ones too.

Men are from Mars, Women are from Venus (Relationships) by Dr John Gray.

How to Get What You Want, and Want What You Already Have (Life) by Dr John Gray.

The Power of Now - Eckhart Toller (the power of thought and living in the moment, not the mind)

Life Strategies by Dr Phil McGraw (known as Dr Phil, he was once just a guest on Oprah, but now look at him! Is he a real doctor or just a PhD?)

The Kabbalah Book of Sex - Yehuda Berg

The Power of Kabbalah - Yehuda Berg (amazing book)

The Secret - Michael Berg

The Way - Michael Berg

How to Win Friends and Influence People - by Dale Carnegie (a bit sexist now but really good still)