First off, please accept my heartfelt solidarity with the hardship you have underwent for such a long time of your conjugal and family life.
At this point, you have a range of options. But the first one is to have hope.
Then, it is to not let the circumstances, your emotional state, outside influences (some posters here), the last paycheck, or the long track-record of gambling problem, to influence you into “making a decision”, “acting immediately”, “issuing an ultimatum”. That would be the temptation to force an “immediate” change in the situation, and by that, changing the immediate emotional distress all of this has been (is) causing you, at this very moment.
Have hope!
What we are contemplating is a solution !! And that solution, will not be immediate. It will take steps, and it will take time. In the meanwhile, don’t let anyone “wind you up” because it is obvious you are in a distress. And that is the worst possible moment to make any decision.
I think perhaps, however grave the situation might be. The wisest immediate course of action would be to go give a kiss to your family and tell them you love them.
For now, that should be it.
God bless.