Your limitation - its only your imagination.

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 think, therefore I am.

Work ethic is important, because, unlike intelligence, athleticism, or charisma, or any natural attribute, it’s a choice.

Time is your friend, impulse is your enemy.

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

Tough times never last, but tough people do.

Everything you want is on the other side of fear

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

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

No one starts out on top. You have to work your way up.

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

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

Practice makes comfort. Expand your experiences regularly so every stretch won't feel like your first.

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