The Big Win that I once got, half of which I spent on gambling again, I should have been able to use for something unexpected "like what happened in my life few months after my big win". But, everything has happened, and I have to accept that fact. Regret, of course there is. But let it be a memory and something I can tell to remember the times when I was actively playing slots and getting maxwin. Now, this must be a valuable lesson in life, not to be careless in using money to gamble if get a maxwin.
You are not the only one who has suffered this. In fact most big winners will go back playing to win more and that is the effect of greed. When you will big, there is high temptation to play with bigger stake so you can double what you have won and that is when the crash begins to come. If bettors learn to have control of their emotion then casinos will be at the losing end but that doesn't happen. Check most times casinos end up getting back the money you have won because of that greed of continuous gambling and there is tendency of increasing the stake.