You have to believe in yourself, that’s the secret. Even when I was in the orphanage, when I was roaming the street trying to find enough to eat, even then I thought of myself as the greatest actor in the world. Charlie Chaplin
Whenever you are asked if you can do a job, tell ’em, ‘Certainly, I can!’ Then get busy and find out how to do it. Theodore Roosevelt
It’s lack of faith that makes people afraid of meeting challenges, and I believed in myself. Muhammad Ali
Having once decided to achieve a certain task, achieve it at all costs of tedium and distaste. The gain in self-confidence of having accomplished a tiresome labor is immense. Arnold Bennett
Confidence is that feeling by which the mind embarks in great and honorable courses with a sure hope and trust in itself. Cicero
Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained. Marie Curie
And above all things, never think that you’re not good enough yourself. A man should never think that. My belief is that in life people will take you at your own reckoning. Anthony Trollope
I have great faith in fools; self-confidence my friends call it. Edgar Allan Poe
I am the greatest. Muhammad Ali