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

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

It is never too late to become what you might have been

Success can never happen without the journey (struggle).

Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

Don’t confuse your path with your destination. Just because its stormy now doesn’t mean you are headed for failure.

Go as far as you can see, when you get there, you’ll be able to see further

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

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.

There is no elevator to success, you have to take the stairs.

The greatest enemy to human potential is your comfort zone

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

Tomorrow is worth more than yesterday but less than today.

Mathematics Is not a spectator sport. The only way to learn mathematics is to do mathematics.