*) Gambling usually involves taking risks.
*) Do not become addicted to gambling.
*) Gambling should not be done for greed of money.
*) Keep yourself calm and gamble.
*) You should retire two days a week.
I don't see these as gambling tricks, but rather the responsibilities as a gambler.
I mean responsible gambling and in order for us to be responsible, we need to do these things that OP has shared.
Well, it's the subject topic title is a bit misleading, but at least it can still help other gamblers out there especially the 3rd one. As for not getting addicted to gambling, it's hard especially if you are lacking self-control. As for the 5th one, how can you keep yourself calm when you're losing too much money for you to bear already?

As for the 6th one, I guess let's change the word "retire" to "have a day-off of".
Overall, a good tip for those addicted and non-addicted gamblers out there. Always make sure that you don't spend more than what's allocated or it might have some negative effects towards you.