I enjoyed this interview with Matt Marino, a broker at CenterPoint Securities. The entire video is worth watching closely, but this was my favorite bit:

Q: “In your point of view in twenty years working for a brokerage, what is the most common characteristic among the most successful traders?”

A: “That would be that they find themselves. Not to get crazy about it, but it is the truth. They find what works for them and they just stick with it. They don’t vary. They’re not always trying to find the next thing. The guys that figure out what their mentality likes, and absolutely stick with it. The guys who are comfortable with their approach to trading, their strategy, they don’t vary, those are the ones who are successful.”