Actually It depend on the gambler if he gonna let gambling ruins his/her family cause we all know that every gamblers have their own decision in life so without hesitation if gambler want to help his/her family then he/she must do everything to become a good influence in and let themselves follow what's the best thing to do to avoid such losses and addictions in gambling. While in the other hand if a gambler are too bad then he/she will not do anything good
Becoming a good influence to your family as a Gambler is quite difficult especially when they are all aware of your gambling habit,. definitely they will be discriminatory about your habit and some wouldn't even give you a chance to influencing them because they would have already stereotyped to be a bad influence already.
Helping your family as a gambler as well isn't really easy especially when you are not profitable too often but then if they are not aware some how you could be able to put out some help but when they are aware you are a gambler, it's a barrier already to making them have sentiments with your offered help but if you are often profitable gambling and it's evident, you can be of financial help to the family, I don't think they will reject but then they will as well be wearing you to think towards quitting, it's virtually in the hand of the gambler to gamble to ruin or gamble to be of help.