Often times the worst purchases you make are impulse buys. The reason for this is quite obvious, you haven’t thought about it enough to make an educated decision on it. So what you should do is to hold off on that purchase for a bit. Go home and think about it, let a few days go by. It’s possible that half of the time you’ll forget all about it or even realize that you don’t really want it that bad. If however you still want it, then at least research the prices online and find the best deal. But how do you hold off on making that impulse purchase? A good tip is to leave home without a credit card or ATM card and with just enough cash.