The psychology of dressing well and looking good
A lot of people feel that creates a positive mindset, a feeling of increased self-esteem, self-worth, and generally optimistic mindset both on a conscious and subconscious level. So that in turn generates greater positive results.
A Forbes article in 2012 makes reference to this concept:
A study this year from Northwestern University examined a concept called “enclothed cognition.” Researchers define it in their report as “the systematic influence that clothes have on the wearer’s psychological processes,” meaning what your clothes are saying to you, not about you. And how they make you feel.
Sharp dressers such as a Georges St-Pierre, Eddie Alvarez, Anthony Pettis, and Rory MacDonald, try and zero in on this fashion psychological phenomenon.