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. 

Everything you want is on the other side of fear

I can is 100 times more important than IQ.

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.

The greatest enemy to human potential is your comfort zone

Everything that happens was once a dream.

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

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

Instead of finding reasons why you can't, find reasons why you can.

Practice like you’ve never won. Perform like you’ve never lost.

You can have results or excuses, not both

You're not in competition with anyone but yourself. Outdo your past, not other people.

It always seems impossible until it's done.

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

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