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. 

Dreams don't work unless you do.

If you really want something you’ll find a way. If you don’t you’ll find an excuse.

I had no time is no excuse. 1 hour is 4% of your day and 1 minute is 0.34 % of your day.

I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.

If you fail, next time fail better.

The wise person knows that no answer is also an answer

Patience is when you’re supposed to get mad, but you choose to understand

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

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

99% of genius comes from hard work, the remaining 1% comes from innate talent

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

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

Don’t be afraid to work hard and find out how good you can really be.

Hard work - a two way street where you get exactly what you put in.