The percentage of people who succeed from gambling is very small. A person being successful in gambling is like a person winning the lottery. Those who are lucky in gambling will be successful. Failure always comes to those who think gambling will be their primary source of income. There will be no stable income in this game. Gambling is not as easy to make money as they think. When you are not addicted to gambling, that is also a commendable success. In your free time, you should only gamble a little and consider it an entertaining game. If you're lucky, you'll earn some rewards. It's a reward, not the main income.
Gambling isn't really that easy as it involves chances like there is uncertainty if the outcome of the event you gambled on will come out exactly as predicted, though some gamblers are lucky to win more than they lose but regardless of that doesn't mean that gambling should be regarded as a major source of income because sometimes you might be so successful in gambling then you decide to risk all the money you've won with the hope that you gonna win again and by so doing you may lose all your money, so I've not seen anyone that has successfully made gambling their major source of income generation. Gambling should be done at leisure not always like you still need to be involved in other income generation activities rather than depending on gambling to be a major source of income.