If we think positively of course in gambling it will be fine even can control their finances while gambling and will know how much he has to bet in that situation.
This floor is very slippery, friend. even though you can control it but sometimes you can also get trapped only when your mood is not good.
Gambling addicts often have mood swings and its really unstable, especially when they lose in large numbers. Someone might be able to control with words, but the practice is really different. Believe me, if you like to gamble then you surely know what I mean because in reality we are still vulnerable to losing control when the condition is supportive.
None of us is immune to occasional failure of controlling our emotions. It's very important to not panic right after that happened and to not think that you are a problem gambler already. Just reflect on the situation, make your conclusions and move on. If during your mental breakdown you lost 5 times more than you could afford to in one day, don't gamble for another 5 days in order to counterbalance that. ... But, yeah, it's much harder to do it when under influence of alcohol.