Buy one-third as much stuff, but three times as good.
Pay for quality and buy less. Buy and wear only good clothes. You'll look better, feel better, and have an easier time picking out what to wear in the morning. This doesn't just apply to clothes, but to everything in your life.
And when in doubt, throw it away. Get rid of junk. Cut your closet, your office files, and your personal baggage by two-thirds. Travel lightly through life, not burdened like a turtle.