It's interesting, how many books there are about habits. The reason? Habits are one of the key reasons people are either poor or wealthy. If someone has a habit of spending more than they make, in order to live a "celebrity" lifestyle, expect to remain poor. The wealthy have a different mind set. No one is immune from this, hence the reason why so many children of wealthy ancestry tend to spend themselves into the poorhouse.
Lesson #1: Wealthy people read. A lot. In order to learn. A lot.
Book 1: The 7 Habits of Highly Successful People by Stephen R. Covey
Book 2: The Millionaire Next Door by Stanley/Danko
Book 3: The Richest Man In Babylon by George Samuel Clason
Book 4: The Total Money Makeover by Dave Ramsey
A book I haven't personally read yet, but I will tell you about:
The next lesson, make sure you try to balance work with the rest of your life.