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.
Yes set Budget, have a break, avoid drugs & drink and self-control is more important in gambling. By following these, no one will face any major losses in gambling. Gambling should be done very cool mind and tension free. I think all those who can make money from gambling and avoid losses follow these rules. Panic is the biggest problem with gambling losses. Gambling is a critical thing where panic means loss. So I agree with your points
even without vices mate , people will still make wrong decision , like when they become addicted lol.
self control is still the key to this , not stopping drinking or drugs but our mindset and dedication.
lets not get personally into gambling.