It depends if I don't have expenses for the current month, I increase my gambling budget and sometimes I get my expenses from my betting budget if I managed to win. This is really a nice discussion since trying to budget your fund in gambling is one of the really important things since it will let you be a responsible gambler.
I think a good budget is a budget that has been prepared only for the purpose of something, if you are still increasing or sometimes using it for expenses then I guess it can get messy. That is, if you have prepared a budget for gambling even though it is only to gamble on one day and then in gambling you lose until you lose the budget, then as much as possible you should stop at that time but if you increase the budget when you lose then that is not the right way of discipline.
Exceeding to your target budget is not a healthy practice when dealing with gambling, always best to stop when your bankroll was empty.
From that you can say that you have good discipline and you are still in control with your gambling activities, most of the time there's a surge inside you urging you to deposit more as you may win and recover, but once you allow that to happened you'll find yourself losing a lot that day.
Regrets should not take place if you follow your routine, set the amount and make sure not to add more.