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. 

We learn more from failure than we do from success.

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.

Dreams don't work unless you do.

The bad news is time flies, the good new is that you're the pilot.

Success is the sum of small repeated efforts, day in and day out.

Procrastination makes easy things hard and hard things harder.

Fall down seven times, stand up eight.

He who has begun his task is half-way done. Have the courage to begin!

You cannot start the next chapter of your life if you keep re-reading the last one.

Run in the morning before your body figures out what you're doing

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

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

You cannot escape the responsibility of tomorrow by evading it today

Instead of finding reasons why you can't, find reasons why you can.