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

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

The temptation to quit will be the greatest when you are about to succeed

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

There is no elevator to success, you have to take the stairs.

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

No matter how bad it gets, you’re still way ahead of those who haven’t even started.

The greatest enemy to human potential is your comfort zone

Don’t practice until you get it right, practice until you can’t get it wrong.

Don't fear failure, fear being in the same exact same place next year as you are now.

Your limitation - its only your imagination.

The greatest mistake we make is living in constant fear that we will make one.

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

Your attitude is everything. Pick a good one.

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.