Couple years ago I knew a guy who sim traded on something other than Ninja or one of better sim software's. I told him you simple don't get filled on 100 lot first touch and often takes me 200-300 touches to get out at same price of my entire order and his response was I had a bad broker, but that's untrue. I tried to tell him to switch to better software several times, and that his 90% method was going to crash and burn. He went live and he refused to start at one lots and was wiped out in two weeks of $15,000. Never heard from him again. People believe what they want to believe. People who don't back test well enough are fools(I was one long ago) and people lie to themselves each day that if next door neighbor can do this, he can.
Concentrating leads to rapid decline of proper thought processes and will cause stress which in turn weakens focus and loss of memory. To trade 200 times a day and still do well is like threading a needle on the moon from Earth. I never seen anyone do it for more than couple hours, it is eye to hand draining of energy. It is best IMO to have a Goal and work up to handful of hundred contracts and quit, walk away, enjoy. A $200 Goal per contract times 253 days of trading times 20 lot and you are million dollar trader.