I like to write down some New Year’s investing resolutions every January, and I think you might get a valuable nugget or two out of them. So here are 10 to consider (in no particular order): 1. Cut ALL losses short. You’ve read enough about this one, from me and others, so I’ll just leave it as is. 2. Calculate your risk for every trade before (or as soon as) you execute it. That means you’re effectively telling yourself, “I’m buying XYZ at 50 a share, and I’m buying $10,000 worth of it. If it falls 15%, I’m selling,...