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

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

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

We learn more from failure than we do from success.

Yesterday is history, tomorrow is a mystery, but today is a gift—that's why it's called 'the present

You cannot start the next chapter of your life if you keep re-reading the last one.

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

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

Dreams don't work unless you do.

You can have results or excuses, not both

I can is 100 times more important than IQ.

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

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

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.