The greatest enemy to human potential is your comfort zone

Never underestimate the importance of small steps. small steps = big changes. 

Knowledge is of no value unless you put it into practice.

Success is the sum of small repeated efforts, day in and day out.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

Run in the morning before your body figures out what you're doing

Practice makes comfort. Expand your experiences regularly so every stretch won't feel like your first.

Time is your friend, impulse is your enemy.

Don’t hang your targets after you’re done shooting.

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

You cannot escape the responsibility of tomorrow by evading it today

Don’t practice until you get it right, practice until you can’t get it wrong.

99% of failures come from people who have the habit of making excuses.

A book a day keeps the stupidity away.

Success is a journey, not a destination.