5. Chasing trends will put you in debt.

Shop like a man. That means don't be dictated by trends, and only buy stuff you really like. Think back to your sneakerhead days and how you'd just look at a colorway or model and think either "cop" or "pass." You knew what worked for you and what didn't. It's the same with clothing. Not every guy needs a double-breasted blazer or a belted cardigan—especially if you've already got a closet bursting at the seams with stuff you've only half-paid off.