I think that the patience is one of the most important things after all.
If you are not patient enough, you are going to lose all your money in just a few minutes/days/weeks after you started.
Professional gamblers are also very patient people that have a very strong nervous system. As for the trader, I think he has to have more knowledge than the gambler.
In any case, the trader has more chances to make a profit than a gambler. I have never seen such a rich gambler as a merchant of crypto currency.