It is not the genius, it is the decisivenes to a. recognize trends, and b. recognize when the trend turns and c. recognize rapidly when you are wrong. The worst thing for a trader is becoming a LTBH, because positions have gone against him and then he decides to wait until it comes back "to him". You may want to start with a hybrid, some five to 10 positions swing trading and 5 to 10 positions day trading.
Last, remember that you do not have to be all the time in the market, be in only when you feel pretty sure that you are going to be right with a given stock, or with the market's direction. Right now I am at 74% cash and am quite happy to have stepped aside after lunch. Always have a plan, and as much as you can, plan the play and play the plan.
Zeev