"Some people plant in the spring and leave in the summer.  If you've signed up for a season, see it through.  You don't have to stay forever, but at least stay until you see it through." -- Jim Rohn

"What this power is I cannot say; all I know is that it exists and it becomes available only when a man is in that state of mind in which he knows exactly what he wants and is fully determined not to quit until he finds it." -- Alexander Graham Bell

"Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all." – Dale Carnegie

"Resolve in advance to persist until you succeed, no matter what the difficulty." -– Brian Tracy

"When you get into a tight place, and everything goes against you, till it seems as though you could not hold on a moment longer, never give up then--for that is just the place and time that the tide will turn." -- Harriet Beecher Stowe  

"Big shots are only little shots who keep shooting." -– Christopher Morley  

"If what you are doing is worth doing, hang in there until it is done." -– Nido Qubein  

"Winning is easy...all you have to do is outlast your opponent." -– Doug Firebaugh 

"When you come to the end of your rope, tie a knot and hang on." -- Franklin D. Roosevelt  

"Persistence takes a focus that doesn't see the obstacles but only sees the opportunity..." -– Doug Firebaugh   

"Your most valuable asset can be your willingness to persist longer than anyone else." -– Brian Tracy

"Have you ever considered the cost of quitting?  For a real eye opener...ask Thomas Edison...Steve Jobs...Michael Jordan...or Jim Carrey...ask them how much it would have cost them if they had quit...what about you?" -– Doug Firebaugh  

"There is natural talent, but not overnight success." -– Patricia Fripp  

"Next time someone tells you 'never,' remember that means 'not for at least one hour.'" -- Jeffrey Gitomer  

"Your decision to be, have and do something out of ordinary entails facing difficulties that are out of the ordinary as well.  Sometimes your greatest asset is simply your ability to stay with it longer than anyone else." -- Brian Tracy

"I will persist until I succeed. Always will I take another step.  If that is of no avail I will take another, and yet another. In truth, one step at a time is not too difficult...I know that small attempts, repeated, will complete any undertaking." -- Og Mandino  

"Through perseverance many people win success out of what seemed destined to be certain failure." -- Benjamin Disraeli  

"Never, Never, Never Quit." –- Winston Churchill  

"If you believe you're right...stand up and fight for your place in the sun. If you believe you can do it, hang in for the whole 15 rounds because even if you don't win, you will have earned the respect of everyone in the fight, including yourself, and in that sense you will have prevailed." -- Erin Brockovich

"Continuous effort, not strength or intelligence, is the key to unlocking our potential."-– Winston Churchill  

"The strongest oak of the forest is not the one that is protected from the storm and hidden from the sun. It's the one that stands in the open where it is compelled to struggle for existence against the winds and rains and the scorching sun." -–Napoleon Hill  

"Persistence is what makes the impossible possible, the possible likely and the likely definite." -– Robert Half  

"I tell them that if you stay committed, your dreams can come true. I'm living proof of it. I left home at 17 and had nothing but rejections for 25 years. I wrote more than 20 screenplays, but I never gave up."-– Michael Blake (author of Dances with Wolves)