As you know that you need to stop and leave the game? How can you feel this moment. I almost always lose their money because they can't learn when to leave the game. I'm not sorry to lose. I have a lot of money not to lose, but I can't keep the winnings if I'm lucky.
This is every newbie gambler problem, each one of them will go through this phase and it's quiet normal, you don't need to fret over this, you loose and that's how you learn, it's nothing new or old logic but it takes lot of time and that's okay, my best advice is to tie your gambling funds to a goal, this is what I need, I can gamble up to here and not above this limit and it work wonders, you'll automatically stop gambling and that's how it is.