I think like that sometimes, especially when an important decision was done. It has always come to my mind that other possibilities could have happened, but it's already there and you can't change anything about it. But the important thing to do is that you won't regret anything that you have done already, because why do that decision if you don't like it or something? Unless you are left without a choice anymore, you only have that one regretting the decision, but I don't believe that. There is always a way, just like gambling, you decide to win, and hope that you do. Don't regret if you lost, because it was your choice to gamble more.
I also believe that life is always a gamble, In doing decision you should make it and sometimes you don't know if you have done the right thing or not, You can surely apply to gamble in everything that you decide, You should always believe that there is no turning back there is no reverse in life if you do anything stupid there is no rewind to bring you back in time just like in gambling if you lose your money there is no chance in regaining it all back again,
Well in apply gambling with games definitely we can sure gamble with friends and there should be stakes prepared for it because if there are not that is not gambling but only a game that doesn't have any consequence or risk involve.