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

The temptation to quit will be the greatest when you are about to succeed

Hard work beats talent when talent doesn't work hard.

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.

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

It doesn’t matter where you start, it matters how you end

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.

There are no bad mistakes in maths, only discoveries.

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

The greatest enemy to human potential is your comfort zone

Tough times never last, but tough people do.

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

Don’t practice until you get it right, practice until you can’t get it wrong.

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

Just stick with it, what seems hard now will one day be your warm up.