Comfort zone

I know a lot of traders and more or less I learned the way they trade. Some of them are obviously better than the others and I start wondering why is that way. Where is the difference between them. I noticed difference in their behavior. The group with the better results was never afraid of trying new things. Moreover they was doing it on purpose On the other side, the weaker group was always trading one way. They were trying out one system hundred times, hoping for different results. They had no idea what to do when things got out of control. They were not prepared for that.

I think that stepping out of the comfort zone was the difference between them.