Your attitude is everything. Pick a good one.

It is never too late to turn an unproductive day into a productive one.

We all make mistakes. What matters is how we choose to move forwards from them.

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

Failure to prepare = preparing to fail

Don't be afraid to take an unfamiliar path.  Sometimes they're the ones that lead you to the best places.

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

Time is your friend, impulse is your enemy.

Good mathematics is not about how many answers you know... It is about how you behave when you don't know.

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. 

Success is a journey, not a destination.

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

Hard work beats talent when talent doesn't work hard.

The master has failed more times than the beginner has even tried

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