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. 

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.

The greatest enemy to human potential is your comfort zone

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

The road to success is like a staircase. If you want to succeed, double your failure rate

Never let a dark chapter make you forget that better days are ahead of you. Your story is far from over.

Procrastination is the thief of time and the enemy of success.

Hope might be a good breakfast, but it makes a very poor dinner

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

Procrastination makes easy things hard and hard things harder.

Nothing is impossible if you want it badly enough. Impossible = I'm possible.

The wise person knows that no answer is also an answer

There are no shortcuts to any place worth going.

We learn more from failure than we do from success.

When you make a mistake, take another chance. Only when you choose not to do so do you fail.