The man who thinks he can and the man who thinks he can’t are both right.

 Confucius knew that an individual executes to the level of what he or she believes in themselves. Create a higher level of self-confidence – create a higher level of self-esteem. Many people don’t buy into themselves enough, and the limitations they live with come from within. Don’t be your own worst enemy, don’t buy into this limiting mentality.

“When you have confidence, you can have a lot of fun. And when you have fun, you can do amazing things.”
-Joe Namath

“Optimism is the faith that leads to achievement. Nothing can be done without hope and confidence.”
-Helen Keller

“Confidence comes not from always being right but from not fearing to be wrong.”
-Peter T. McIntyre

“Don’t wait until everything is just right. It will never be perfect. There will always be challenges, obstacles, and less-than-perfect conditions. So what? Get started now. With each step you take, you will grow stronger and stronger, more and more skilled, more and more self-confident, and more and more successful.”
-Mark Victor Hansen

“Inaction breeds doubt and fear. Action breeds confidence and courage. If you want to conquer fear, do not sit home and think about it. Go out and get busy.”
-Dale Carnegie

“Do not let what you cannot do interfere with what you can do.”
-John Wooden

“You’re never as good as everyone tells you when you win, and you’re never as bad as they say when you lose.”
-Lou Holtz

“Courage is resistance to fear, mastery of fear, not absence of fear.”
-Mark Twain

“Sooner or later, those who win are those who think they can.”
-Paul Tournier

“Man often becomes what he believes himself to be. If I keep on saying to myself that I cannot do a certain thing, it is possible that I may end by really becoming incapable of doing it. On the contrary, if I have a belief that I can do it, I shall surely acquire the capacity to do it even if I may not have it at the beginning.”
-Mahatama Gandhi

“Trust yourself – you know more than you think you do.”
-Benjamin Spock

“We don’t see things as they are, we see them as we are.”
-Anais Nin

“Success is most often achieved by those who don’t know failure is inevitable.”
-Coco Chanel

“Confidence doesn’t come out of nowhere. It is a result of something… hours and days and weeks and years of constant work and dedication.”
-Roger Staubach

“Successful people have fear, successful people have doubts, and successful people have worries. They just don’t let these feelings stop them.”
-T. Harv Eker

“If we did all the things we are capable of doing, we would literally astound ourselves.”
-Thomas Edison

… and remember, if all else fails, and you find your confidence at work flagging, remember what Christopher Robin told his good friend Winnie the Pooh: “You’re braver than you believe, and stronger than you seem, and smarter than you think.”