Don’t compare yourself to others. Compare yourself to the person you were yesterday.

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

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

The greatest mistake we make is living in constant fear that we will make one.

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

Dreams don't work unless you do.

Knowledge is of no value unless you put it into practice.

A book a day keeps the stupidity away.

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

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

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

The easiest person to deceive is yourself.

Time is your friend, impulse is your enemy.

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

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.