When I first started, I used to hold them stupidly to get a real big return. Now, however, I've started buying selective stocks in lots of 500 or 1000 shares. I usually sell when I get a targeted gain.. Sometimes 12%, sometimes a little more. The reasoning, at least, in my thinking is I get a fair return and I am out. Recently it has worked well. But on a few trades I sold at like 20, and a few days later it is at 24. Am I being too conservative?