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

There is no elevator to success, you have to take the stairs.

You cannot escape the responsibility of tomorrow by evading it today

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

It doesn’t matter where you start, it matters how you end

Skills are built not born.

Everything you want is on the other side of fear

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

The temptation to quit will be the greatest when you are about to succeed

Work on your weaknesses until they are your strengths and work on your strengths until they are second nature.

Failure to prepare = preparing to fail

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. 

There are no bad mistakes in maths, only discoveries.

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

Focus on progress, not perfection. Practise a little bit every day - little and often  Slow and steady wins the race.