If gambling is just a form of entertainment, then in that case I would only track losses. I mean, this is the kind of expense that definitely needs to be controlled. Because sometimes you can get too carried away and spend more than you planned, and it can leave an overall negative impact both on your mood and your family budget. That’s why it’s absolutely necessary to control expenses, and if you happen to get a big win, something tells me it’ll probably be a one-off case that won’t significantly affect the overall statistics.
And for professional players, of course, keeping records is a must. Absolutely all expenses, wins, losses, total balance, and stats for individual games should be tracked. All of this is needed in order to analyze the situation and see where you have more losses and where you’re making a profit.