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. 

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

Don’t practice until you get it right, practice until you can’t get it wrong.

99% of failures come from people who have the habit of making excuses.

I can is 100 times more important than IQ.

Fall down seven times, stand up eight.

Skills are built not born.

Nobody said it’d be easy, they just promised it would be worth it.

If you fail, next time fail better.

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

It always seems impossible until it's done.

Hope might be a good breakfast, but it makes a very poor dinner

Be strong enough to stand alone, smart enough to know when you need help, and brave enough to ask for it.

Your attitude is everything. Pick a good one.

Never let a dark chapter make you forget that better days are ahead of you. Your story is far from over.