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

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

Don't fear failure, fear being in the same exact same place next year as you are now.

Success can never happen without the journey (struggle).

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

It always seems impossible until it's done.

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

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

Hard work always pays off - it is not a question of if you will get there, but WHEN you will get there

The bad news is time flies, the good new is that you're the pilot.

When you make a mistake, take another chance. Only when you choose not to do so do you fail.

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

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

I have not failed, I've just found 10,000 ways that won't work.

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