Those who have that problem should seek help, and it's better if they can get away from vices that would add more problems. They need company, they need to relax, and try to enjoy life. I don't think you can find that in gambling. It's mostly stressful unless you win in the first bet, which is very rare to happen.
It is not rare, we can win very often depending on the game but winning big is rare and even rare is winning an amount that can make us rich that is how the gambling works. Anxiety can be treated and there are lot of ways and even without any psychiatric medicine is possible depending on the stage they are in. Stress and anxiety are two different things but have similar symptoms which is why they're left unnoticed.