Let me tell you the secret that has led me to my goal: my strength lies solely in my tenacity. -Louis Pasteur

My great concern is not whether you have failed, but whether you are content with your failure. -Abraham Lincoln

We deem those happy who from the experience of life have learned to bear its ills, without being overcome by them. -Juvenal

When I thought I couldn’t go on, I forced myself to keep going. My success is based on persistence, not luck. -Norman Lear

The saints are the sinners who keep going. -Robert Louis Stevenson

Things may come to those who wait, but only things left by those who hustle. -Abraham Lincoln

The big shots are only the little shots who keep shooting. -Christopher Morley

If you only knock long enough and loud enough at the gate, you are sure to wake up somebody. -Henry Wadsworth Longfellow

Perseverance is the hard work you do after you get tired of doing the hard work you already did. -Newt Gingrich

All great masters are chiefly distinguished by the power of adding a second, a third, and perhaps a fourth step in a continuous line. Many a man has taken the first step. With every additional step you enhance immensely the value of your first. -Ralph Waldo Emerson

When things go wrong as they sometimes will;
When the road you’re trudging seems all uphill;
When the funds are low, and the debts are high
And you want to smile, but have to sigh;
When care is pressing you down a bit-
Rest if you must, but do not quit.
Success is failure turned inside out;
The silver tint of the clouds of doubt;
And you can never tell how close you are
It may be near when it seems so far;
So stick to the fight when you’re hardest hit-
It’s when things go wrong that you must not quit.
~ Unknown