Practice makes comfort. Expand your experiences regularly so every stretch won't feel like your first.

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

Never underestimate the importance of small steps. small steps = big changes. 

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.

Life is full of opportunities. With every opportunity that is missed, another one is born.

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

Success can never happen without the journey (struggle).

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

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

The boxer is not afraid of being knocked down, he is afraid of not being able to get up again.

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

Procrastination is the thief of time and the enemy of success.

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

Everything you want is on the other side of fear

A hero is no braver than an ordinary man, but he is braver five minutes longer.