Always making sure this is brief as possible.
From my observation on addiction, i get to see how addiction is like a chain. Individuals moving from one addiction to another and how several addictions or one addiction can give birth/rise to the gambling addiction. We can all agree as an individual there are several things in life we can be addicted to aside gambling.
Substances like like alcohol or stimulants addiction (drinking), Nicotine dopamine and weed addiction (smoking), to mention a few others can influence a responsible gambler into becoming addicted. There are people in the society who gamble to humanize, smoke or drink, or go out on expensive rides and stuffs.
When it becomes difficult for someone is addicted to gambling to quit. I think its not just about quitting gambling he has to do, if he as any other thing he is addicted to he should first quit on those ones because quitting those ones might make him lose interest automatically in gambling.
Gambling is a different ball game entirely, being addicted in other aspect like you said don't really affect gambling, most addicted gambler do not have those traits you mentioned, maybe since it has to do with advance calculation on how to win your game and gamblers are very calculative and we all know that gambling does not often win, then how can you tell me that someone looking for money is the same as someone enjoying himself, and I don't think that a gambler that understood gambling very well, after a long awaited win will not invest his life but decide to squander the win within a short period of time for pleasure sake, then he must be joking.
Smoking, drinking and womanizing are habits that compliment each other for pleasure sake, there is no relationship among them all, other addiction can't lead to gambling addiction.
If one decides to stop any of the habits he know how to go about it.