Confidence

Can clothes dramatically change ones mood and confidence? I used to belong to the school of thought that it doesn't matter what you wear it's what you are.
However in recent years especially since working for large blue chip companies I'm afraid to say appearances do matter.
People do judge how well your hair is brushed, how smart your clothes are...... I neglected myself for a few years as I have been unhappy in my job and have become apathetic, which is really really bad. I musn't let others get to me and should feel good about myself and dress well.