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. 

Skills are built not born.

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

Failure to prepare = preparing to fail

There is great wisdom in being able to realise that you don’t understand something before it goes too far.

The greatest enemy to human potential is your comfort zone

Whenever you find yourself doubting how far you can go, just remember how far you have come.

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.

Lose an hour in the morning and you will spend all day looking for it.

Start, struggle, fail, fix and learn. Repeat.

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

There is no talent here. There is hard work and obsession. You could be anyone if you put in the time.

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

Your attitude is everything. Pick a good one.