So saying that nobody wants to see how much they have lost is a symptom of a bigger problem since they don't want to accept the possibility that something is wrong.
Bro gets to face his fear no matter the reasons of why bro isn't keeping the record of his wins and loses. I know it's time consuming and seems stressful like "what the fuck this could mean, when I can gamble as much as I want in a day, so why should I keep track of my progress" to me, it's not just that, but it disciplined you to take responsibility of your actions, to know whether if it's due to reduce or increase the rate of betting or not.
It's essential to practice this tbh, as it's a sign of self respect and self assurance that you can stop, reduce or increase whatever habit you have.