I remember taking one of my first semester courses at college, the Psychology of Fashion, and thinking what on earth did I just pay money for. In my narrow-minded purview it ended up being a shortsighted judgment. When you sit and think about it, you realize just how much of an effect the clothes we wear have on psyche.
Simply think about the person you become when you get dressed every morning versus whom you are when you put on house clothes in the afternoon.