Self-control. That is one of characteristics of professional and well known gamblers. That's actually how they gone so high. Of course there are another factors of success too, such as skills and luck. But I count self-control as the main of them. Not each of us can stay cool headed during the game and that's one of reasons why we loose at the most of times.
Gambling is always programmed so that the game organizer makes a profit. Want to win? To do this, you need to become an investor of such a platform. In other cases, you should consider the game as entertainment, and not as a business.