God has given us control over one thing in our lives - our thoughts.
A wise man watches his faults more closely than his virtues; fools reverse the order.
No man has a chance to enjoy permanent success until he begins to look in a mirror for the real cause of all his mistakes.
The best way to succeed in this world is to act on the advice you give to others.
You might well remember that nothing can bring you success but yourself.
Napoleon Hill saw this law of transmutation as the seed of equivalent benefit: With every disappointment, heartbreak, or failure, there exists an equal (usually greater) positive benefit.