There have been quite a few, so it wasn't easy to choose, but I'd have to go with "choosing to daytrade for a living". This is an incredibly stupid decision to make. The odds of success in daytrading for a living (its time intensive nature pretty much means you'll have to do it for a living) are so stacked against you it's not funny. I am no idiot, mind you; far from it. I even made money one year. Not your "$2000/day avg", not even $500, but an income that I'm unlikely to see working for a wage for a while yet. Still, as the bible says, "..time and chance happen to them all". I don't care what anyone says, daytrading for a living is lousy deal whatever way you cut it. Yeah, sure, there are some people that can make money at it, year after year after year, but they are raaaaaaare, and for all intents and purposes, you won't be one of them. Not a pretty picture, I know. And of those that are, it's a statistical certainty that some of them are by virtue of luck alone; markets may be a lot less random than academics believe, but they're a lot more random than traders believe. Don't misunderstand, I'm not railing against all trading. Not at all. I still maintain a great interest in the markets. Only that choosing to make your livelihood from trading the markets is, for the vast majority of people, about as bad a career move as you can make.