Has a recent spending spree left you feeling just a bit regretful? Today, if you can undo any of the damage, you should. Take back whatever you don’t need, and make a promise to yourself to be a little bit thriftier with your money. You don’t have to dramatically change your spending habits or turn into a cheapskate, but you should sober your spending. A big opportunity is coming up, and you will need more cash than you have to take advantage of it.