IMO, successful gamblers are those who can enjoy gambling but they can avoid the addiction. If you become an addict, I think you are failed to success in gambling. Smart gamblers must know how to gamble in the right way, they just make gambling to be a place for entertainment and think the prizes for the bonus only. Don't have the mindset to chase the wins in gambling! If you chase the wins and you become an addict, you are already in the wrong way in gambling. Being an addict probably will end up with bad result, you will be difficult to recover because you too rely your life on gambling.

Gambling is good as long as you make it as the place for entertainment and try luck for earning money. But if you make it as your main job or you put all your money into gambling, it is not the right way in gambling. Addicts probably use all their money into gambling because they want to chase the win, so how can the addicts to be categized as a successful gambler. It doesn't make sense for me!