No doubling at all. Win or lose. That's what I do. I don't really mind just playing on the same amount at every roll or even in sports betting because I don't want to have that greedy habit that could also ruin me in the long run. I think I am satisfied adding some spice on the sports games by adding a bet on it.
Let's not waste too much money in gambling. If we win, let's withdraw and enjoy it. If we lose then stop for a moment and think about whether we should deposit more or we can take the day off and just call it a day.