We know some people who have lost millions of dollars and have gone to jail because they could not repay the casino markers (or loans) they took out. If all you lost was $3,000 (which we know is a lot of money), then you are in a much better position than they are! The damage you think you've done is not even a scratch on the surface when placed side by side with the damage done by some of these guys. The most important thing to do right now is to ease yourself out of thinking that you must get that money back. Try to move on and don't look back. Unless you are already addicted to gambling, you can still break away from the vicious cycle of an addicted gambler! We don't know your level of expertise in gambling, but most people starting out don't realize that casino games are actually made to benefit the casino, NOT the gambler! When you play any casino game, it's NEVER a 50/50 proposition--it's usually 49/51 or so where 51 is for the casino. That's just how the games were designed. Even the world's greatest mathematicians can not come up with a formula that will guarantee the gambler consistent winnings! That's not to say that there aren't gambling systems that you can use to make some profit in the short run, but rather that you will definitely lose increasingly more money at gambling if you don't employ a system to help suppress the losses. If you are going to gamble, be a responsible gambler by doing your "homework" and understand the risks involved and how it can affect you. Last but not least, you should NEVER gamble with money that you need to pay monthly dues, fees or the cost of living with.
P.S. Although we don't recommend anyone to gamble, if you MUST, at least equip yourself with proper knowledge before you do.