Learn how to save yourself from greed. If you learned all of that before betting, now you'll prevent loss and addictions
Greed is one of the big factors that gamblers turn to addiction because they aren't able to control themselves. Others might ruin themself and make the worst thing happen. Consequences and outcomes should know gamblers before they will step in into main door of gambling. All forms of addictions are bad so better to stay away while earlier.
Unfortunately, this eats many gamblers' money when they are gambling and I'm thinking too that controlling yourself when you are gambling is that hard to do.
The best thing to do is to not to gamble at all so that your money will not be lose and you will not be addicted into it but if you really want to, you must know the consequences and risks that you may face if the worst situation happens.