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

Focus on progress, not perfection. Practise a little bit every day - little and often  Slow and steady wins the race.

99% of failures come from people who have the habit of making excuses.

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.

Do Not Be Afraid To Make Mistakes. Each mistake teaches us something.

If you can understand just one thing thoroughly, then you will understand everything.

Dreams don't work unless you do.

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

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. 

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

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

Work like you don't need the money, dance like nobody's watching and love like you've never been hurt. 

There are no bad mistakes in maths, only discoveries.

Your attitude is everything. Pick a good one.