The statistics of failure in the business are overwhelming. It's often said that about 90% of individual traders (and maybe funds as well) fail and fade away with time. On the other hand, very little is known about the long lived, successful traders. Others would say it's just O.K. Without the pool of losers there would be no source of money. And in fact, we know it's true. However, of course, they never contemplate to be on the losers' side. With that said, I would like to know from the long lived which they consider to be the most important aspect of trading a sucker should think about and act upon to survive in the long run. Say, something that would enable him, after 30 years in the business, to look back and say to himself: "Joe, you were a wise trader. I am proud of you." Is there a way to?