Whenever you find yourself doubting how far you can go, just remember how far you have come.

Your attitude is everything. Pick a good one.

Don’t hang your targets after you’re done shooting.

Success can never happen without the journey (struggle).

Lose an hour in the morning and you will spend all day looking for it.

We all have two lives. The second begins when we realise we only have one. 

Yesterday is history, tomorrow is a mystery, but today is a gift—that's why it's called 'the present

It always seems impossible until it's done.

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

Don’t compare yourself to others. Compare yourself to the person you were yesterday.

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

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

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

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

No one starts out on top. You have to work your way up.