Giving a break has always worked well for me. Many people just keep on gambling like nothing happened but the reality is that if you give a break then it should be doing great for you. Many people forget that the best thing to do would be making sure that you are working towards making sure you "forget" what you lost.
I think the best thing to do after losing money is just to take a break, anyone that think their is any way or strategy to recover loss is already addicted to gambling. Addicted gamblers never accept their loss, they believe they can win back the amount they have lost and if they change pattern and countinue to gamble and they will keep on losing. everyday won't really be our lucky day, incase if you notice you have being playing and losing, just take a break that day and fight back another time.
If you give a break, all that anger, all that need to recover, all that stress basically everything that comes with the loss at gambling will get lower and lower with time.
If you want to use anger to win back your lose in gambling, then you will keep on losing, your chances of winning back your money will be very slim, when gambling don't always have it in mind that you want to win back your losses, just gamble with free mind, gamble because you want to have fun and not because you want to make money.