Don't expect to be good at maths or understand things straight away. Be patient and persistent. Rome wasn't built in a day, but they worked on it every single day. 

Everything you want is on the other side of fear

Nothing is impossible if you want it badly enough. Impossible = I'm possible.

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

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

Failure is not the opposite of success, it is part of the success.

I can is 100 times more important than IQ.

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

The gift of imperfection - let go of who you think you're supposed to be and embrace who you are.

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

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

If you fail, next time fail better.

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

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

Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.