hey man. i used to do a lot of gambling as well, and just like you are saying, can be up lots and then down lots. hell i was even going into five digits up or down at one point. biggest question for you is how much can you afford to gamble. if you had bankroll like bill gates, down three grand is fuck all, but if that three grand stopped you from making rent or mortgage or food for the kids, yes then get the hell out of that casino, just cut your loss. biggest thing though, like everyone else will say, unless you are some math whiz from harvard or MIT, you are bound to lose. THE HOUSE ALWAYS WINS. PERIOD. for me, the key is knowing when to walk away. if your up a bunch leave, doesnt matter if you think you can make more, just leave. same goes for when you losing, once you start going down get the hell out. cause its the idea that you can win your way back up that fucks you over. sometimes it works but more often it doesnt. so my advice is to go in with a set amount, just have a fun time, enjoy yourself cause thats what going to the casino should be all about, regardless whether you win or lose!