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

Everything you want is on the other side of fear

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

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

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.

Procrastination makes easy things hard and hard things harder.

Knowledge is of no value unless you put it into practice.

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

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

The journey of a thousand miles begins with one step. 

Just stick with it, what seems hard now will one day be your warm up.

You cannot escape the responsibility of tomorrow by evading it today

Tough times never last, but tough people do.

We learn more from failure than we do from success.

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