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

A hero is no braver than an ordinary man, but he is braver five minutes longer.

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.

There are no bad mistakes in maths, only discoveries.

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

Hard work - a two way street where you get exactly what you put in.

Life is full of opportunities. With every opportunity that is missed, another one is born.

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

Time is your friend, impulse is your enemy.

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

Procrastination is the thief of time and the enemy of success.

Do Not Be Afraid To Make Mistakes. Each mistake teaches us something.

You can hire a tutor but you can't hire someone to practice for you.

FAIL - First Attempt In Learning

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