I honestly do not believe it takes being wired one way or another, it simply takes dedication and a work ethic.
I'm going to have to go with Bohb and dontvote on this one. You can't just sit down and make money if all you have is dedication. Maybe you don't have to be "wired" a certain way from birth, but you do need to think a certain way.
If you're going to take advantage of inefficiencies and loopholes then you need to be the type that questions everything, takes nothing at face value (including the "rules"), and can instantly see ways to make money or beat the system in everyday life situations that they are exposed to.
If that's not your cup of tea and if you'd instead like to grind away steady profits using more conventional means then you still need to come up with a strategy that _works_ and that still takes plenty of creativity, or specialized knowledge, or anything else that the average Joe doesn't have. If all it took was hard work and logging hours then every stay-at-home parent in the country would be doing it instead of falling for the work from home scams. There are plenty of people who will spend all friggin day to make a lousy $15 if it was that "easy".
You can probably get lucky and make some cash in the short term the way things are, after all the P2P trading angle is rather new. There aren't that many people involved with it and those that are may not have had the time to broaden their approaches. Your hard work is absolutely meaningless when there's a bot sitting there across the trade that doesn't care about working 24/7. If your strategies are generic, if all you're doing is working hard, then it won't be long at all before you are making nothing. It's a cat-and-mouse game, and mice who aren't quick to adapt don't tend to live long when there's a clever cat around.