Hi friends, success and failure are relative terms. I don't think any trader can call himself successful. In history many traders who were considered successful, at times they failed.Like business. Lahman, AIG, GM , these were highly successful business empire.They fell like pack of cards. I read book by Lary King. At times he also lost averything. To err is human.Today who is successful, tomorrow he may be a failure, reason may be anything.
However, I think any intelligent man can learn the technique with time,effort and practice. But most traders are in the dark about the most important thing.Most important thing is being 100% mechanical or objectivity, yes controlling emotions like greed,fear,panic,courage, exitement, overconfidence.Also to some extent trading is game of chance. So difficult to say whether you are successful or not.