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

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. 

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

You cannot escape the responsibility of tomorrow by evading it today

Success can never happen without the journey (struggle).

The easiest person to deceive is yourself.

We learn more from failure than we do from success.

The master has failed more times than the beginner has even tried

Failure is NOT your destiny. Failure is the key to success.

Success is not final, failure is not fatal.  It is the courage to continue that counts.

Run in the morning before your body figures out what you're doing

You can have results or excuses, not both

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

The power of reflection is the most powerful skill you’ll learn.

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