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. 

Failure to prepare = preparing to fail

You cannot escape the responsibility of tomorrow by evading it today

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

Don't put off until tomorrow what you can do today. If today you have no time, it means tomorrow you'll be too tired and the next day you'll be something else.

Failure is not the opposite of success, it is part of the success.

The greatest enemy to human potential is your comfort zone

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

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

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

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

Your attitude is everything. Pick a good one.

Time is your friend, impulse is your enemy.

If you want to succeed, double your failure rate.

"I" not them. Be the best version of you.