Positive attitude leads to success

I have been reading personal development (also called "self-help") books since I was in the third year of high school. These books have shaped my life and played an important role in making me who I am today.

The most important thing in your life, if you want to be successful, fulfilled and happy, is your attitude. A positive attitude is worth more than a Harvard degree. It can take you to places and do things for you that a PhD from even the top universities in the world cannot do.