Try and do one thing each day that you would really rather not do.

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

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

Whenever you find yourself doubting how far you can go, just remember how far you have come.

The bad news is time flies, the good new is that you're the pilot.

You can have results or excuses, not both

Twenty years from now you will be more disappointed by the things you didn’t do than the things you did do

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

Do what you have always done and you will always be what you have always been

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

I think, therefore I am.

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

Failure is not the opposite of success, it is part of the success.

We all have two lives. The second begins when we realise we only have one. 

Tough times never last, but tough people do.