My mentor, Art, used to say, "dress like a deck hand, get treated like a deck hand."
His point was look a little sharper than average, you will be noticed and get better results. Even though his business was contracting, his advice holds for the horse business.
Art meant that it pays to wear a pressed collared shirt, a sport coat when appropriate, riding boots, britches or suitable cowboy boots and hats. Having a presence other than a barn worker will help your business.
It’s true you never get a second chance to make a first impression in business. Look the part of success. You’ll feel more successful and your business will prosper.