I'v been swing trading stocks for about 2 years and have been consistantly profitable the last year or so. I am young and my account is small, so I work full time. I'v been pondering the idea of learning 1 thing and mastering it and only trading it. I'v traded options a little and I don't have any interest in continuing with them. I figure whatever I decide to learn will be a futures product. I am considering crude oil, possibly euro/dollar, the thing I dont like about currencies though is that it seems like so much affects it, I shouldn't get into it at this point, but its not out of the question. I also of course am thinking about indexes suck as the e-mini. Does anybody have and suggestions and reasons why? I would consider pretty much any commoditiy or futures product. My ideal holding period would be anywere from 1 day to a month. I work days so I cant sit in front of the computer all day. My intensions are to read everything i can and study whatever I choose and try to master it and only focus on 1 thing. any suggestions?