It seems like a no-brainer but the way you present yourself is absolutely crucial to your success.
People in positions of power are by default impressive dressers that are masters of their own wardrobes. If you're going to show up to work dressed in washed out jeans and a ACDC t-shirt – you had better be the smartest, most hard-working and irreplaceable guy in the building or you’ll end up stuck in your current position for longer than you’d ever think possible.
“You got to dress for the job you want, not the job you got.”– Mitch Gilliam
You should accessorize carefully in a way that reflects professionalism at all times – even when you’re on a business trip or attending a company seminar or course.