Somewhere I read that Harvard’s Professor Archibald MacLeish was asked by a student about to graduate into our highly competitive world what advice he could give him. Professor MacLeish’s answer was, “Wear your Sunday suit every day.” The inference, of course, being that the suit would give the young man such confidence in seeking positions that he would eventually own many Sunday suits, for any and all days.
Splendid advice even by itself, but it’s probable that the professor meant not only his Sunday or best suit, but also his Sunday or best smile, disposition, and behavior—knowing that each begets the other. So wear, not only your clothes, but yourself, well, with confidence. Confidence, too, is in the middle of the road, being neither aggressiveness nor timidity. Pride of new knowledge—including knowledge of clothes—continually adds to self-confidence.
— Cary Grant