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. 

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

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

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

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

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

He who has begun his task is half-way done. Have the courage to begin!

It is never too late to become what you might have been

The journey of a thousand miles begins with one step. 

In order to become better than anybody else you must first become better than yourself.

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

We learn more from failure than we do from success.

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

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

Success is not final, failure is not fatal.  It is the courage to continue that counts.