The only time I can increase my bet is when there's one single game that I'm certainly sure about its outcome, that's the kind of game I will increase my bet because I feel convinced that the outcome will not be a lose. I hardly double or increase my bet after losing the first bet and that's because it gets me worked up already to lose a bet and therefore I don't fight the lose immediately or later on, I just stick with the careful strategy of mine, to win at least.