What could be the reason for his return ...
There are several reasons, the most common being that,
- The person failed to find other activity to take up that time that was formerly used in gambling.
- They failed to identify their trigger to gamble, so they relapsed.
- They failed to do things differently after their new resolution not to gamble again.
what can be done to manage such situation?
Identify and know your triggers so you can avoid them, and then after the resolution to quit gambling, you have to make the conscious effort of avoiding habits, situations, or even people that will make you want to gamble.
You can't say you want to quit gambling, but you still actively go through game odds, etc., or things like that.