You gain strength, courage, and confidence by every experience in which you really stop to look fear in the face.... The danger lies in refusing to face the fear, in not daring to come to grips with it. If you fail anywhere along the line it will take away your confidence. You must make yourself succeed every time. You must do the thing you think you cannot do.
Eleanor RooseveltOf course Mahatma Gandhi you might say did not have so much physical vigor but he certainly seemed to have extraordinary resistance, which perhaps is rather different from physical vigor.
Eleanor Roosevelt