Tomorrow is worth more than yesterday but less than today.

Try and do one thing each day that you would really rather not do.

If you fail, next time fail better.

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

Do what you have always done and you will always be what you have always been

Whenever you find yourself doubting how far you can go, just remember how far you have come.

I think, therefore I am.

If you can understand just one thing thoroughly, then you will understand everything.

In order to become better than anybody else you must first become better than yourself.

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

You can have results or excuses, not both

Dreams don't work unless you do.

It doesn’t matter where you start, it matters how you end

The temptation to quit will be the greatest when you are about to succeed

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.