Successful gamblers are not greedy and they enjoyed doing it with strict limitations according to their limits. Most of these people if not all have also good source of income outside gambling.
That is right, I know some people that became successful on gambling and betting, most of them usually are on lotteries. I do admire most of them getting out of their gambling activities, but some of them still gamble. Even though they still gamble, most of them usually has build businesses that can back up their addiction and some of them started building Gambling businesses.