Unlucky people tend to be more focused on whatever they happen to be doing because they're worried about making a mistake. But there's quite a bit of evidence that this sort of conscious, focused thought uses up so many mental resources that it can actually become a hindrance. Professional athletes perform significantly worse when they actively contemplate their behavior, and focusing on something prevents the mindwandering that's necessary for creative, insightful solutions. Your subconscious is a HUGE part of your brain, but focusing too hard on something makes it harder to use it.