Too much of everything is bad, and good that you are able to put yourself uncheck, btw what about your friend do you also check to see how far the same negative effect of too much gambling have affected him?
Try and check on him to know his current state and to see if he be needing your help as well, because if your friend is already addicted to gambling and hasn't make up their mind to quite, they still will pause a great risk to you keeping them around.
It's not only checking up him, but also advice him not to allow gambling emotions or trauma to ruin his life, because neither you are addicted in the gambling or not you most at least look for the way forward to minimise your way to gamble, because I know that gambling is all about something of careful but some people doesn't understand it in such manner, but if we misunderstood gambling it's when it have effect on us, I have not hear from any angles that a rich person is addicted in the gambling, it always be the poor, and a poor person mindset to gamble is to make money