Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
The difference between a successful person and others is not a lack of strength, not a lack of knowledge, but rather a lack in will.
I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion.'
Success is not final, failure is not fatal: It is the courage to continue that counts.