What could be the reason for his return
And not in position to answer this particular question because have never returned back to my vomit after leaving it but if I could help,
Deppression : is one of the major reasons people fall back to their past bad habits, it should be heard responsible for it because it pull you back to your old bad habits if you aren't careful, many are potential victims of it.
Constant reflection of the past: this can also contribute in bringing you back to your past gambling habits. When you keep on having constant memories of your past gambling life, how fun it was, how it kept you engaged, the big win and
all that all these are capable in bringing you back to your past gambling habits.
What can be done to manage such situation?
The only positive thing that can be done is for you to help yourself first, abstain completely from gambling, make new moves, new friends, engage more on new positive things that can help in clearing your head, if possible change an environment to somewhere you merely get access to gamble and see everything will fall in place.