Actually, that's a good question. Personally, I think that a small share of success in trading depends on luck. But I doubt that it can be developed in any way. It's like in the Futurama episode, where Bender wanted to win a poker tournament, so he collected Lepricon, the lucky leg of another robot and some other stuff. But life isn't an episode of Futurama, so I doubt it'll work. You either have a personality trait like luck or you don't. Of course, everyone can get lucky sometimes or not. But somehow a person wouldn't be able to influence it. But you actually can develop your professionalism in trading.