The ability to discipline yourself to delay gratification in the short term in order to enjoy greater rewards in the long term, is the indispensable prerequisite for success.
You cannot control what happens to you, but you can control your attitude toward what happens to you, and in that, you will be mastering change rather than allowing it to master you.
If you think a certain thought long enough and hard enough, it becomes a fixed belief and you will find yourself behaving on the outside in a manner consistent with it.
Your choice of people to associate with, both personally and business-wise, is one of the most important choices you make. If you associate with turkeys, you will never fly with the eagles.
One of the most important rules for success is this: Every great success is the result of hundreds and thousands of small efforts and accomplishments that no one sees or appreciates.