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. 

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

Nothing is impossible if you want it badly enough. Impossible = I'm possible.

We all make mistakes. What matters is how we choose to move forwards from them.

The journey of a thousand miles begins with one step.

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

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

Everything you want is on the other side of fear

There are no shortcuts to any place worth going.

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

I have not failed, I've just found 10,000 ways that won't work.

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

Dreams don't work unless you do.

We learn more from failure than we do from success.

Time is your friend, impulse is your enemy.