This is just the basics, but anyone should be aware of it:
Budget: set it BEFORE you start gambling and stick to it.
Have a break from time to time, it is important to let your brain stop and consider.
Avoid drugs / drink as much as possible, they will make you loose some control innevitably.
Seek help if you feel you are no longer in control. Make a phone call to a friend or go out and speak with someone.
Anything else anyone can think of? Like... read this post before gambling?
Not many people unfortunately knows the real and actual danger of gambling too much, in some cases its can be considered as a drug or worse that’s why it’s not advised for people that get easily addicted to drugs or alcohol since there is a higher chance for them to get addicted.
Avoid drugs / drink as much as possible
Drugs and alcohol is number one for gambling addiction because it add more excitement and good feeling on that adrenaline rush ( my own experience)
One more thing to consider is activities, it’s so important to have other activities or hobbies to do at home or outside and replace that empty time you spend in gambling by your hobbies such as working out, practicing sport, trips or games with friends.