It is never too late to turn an unproductive day into a productive one.

It always seems impossible until it's done.

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. 

Dreams don't work unless you do.

You can pick up a mistake and carry it as a burden,  or you can set it down as use it as a stepping stone to greatness.

I can is 100 times more important than IQ.

Tomorrow is worth more than yesterday but less than today.

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

If you fail, next time fail better.

Don’t be afraid to work hard and find out how good you can really be.

Procrastination makes easy things hard and hard things harder.

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

He who has begun his task is half-way done. Have the courage to begin!

Everything you want is on the other side of fear

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