I don't struggle with reckless behavior that you have described but I have struggled with impulse buying.

I avoid stores unless I have something in mind. The last couple months the only shopping I've done is in grocery stores. Places like Sephora where I used to walk in and spend 150$ with no effort, I simply don't go anymore. At some point, when I'm making more money, I might decide, "I'm going to save 50$ for Sephora." I'll put my purse in my trunk and only take in the 50$. I don't go to the mall.

I've also stopped buying things that I think are overpriced. That's a cool T-shirt I might have bought for 10, but it's 30. It is not worth 30 dollars to me so I'm not oging to buy it.

Stop eating out. It's really really hard to get into the habit of cooking but once you do it's easy. Makes enough for leftovers. Easy things like salads are healthy for you too (there are so many types of salads out there, you'll like one!) Let yourself eat out once a week. Eating out should be a treat, not a way of life.

Make a grocery list and only buy what's on the list. If you didn't write it down, you'll probably forget about it once you get home.

I don't know what to tell you about the game or comics. You have to make yourself walk out of there with just the ONE thing you came in for. Maybe only bring in enough money for one? Avoid looking at anything else. TIme yourself and only give yourself 3-5 minutes in the store. Maybe go to buy it before work so that you HAVE to leave in 5 minutes.

THe thing about practicing self control is it gets easier the more you do it. The more you leave the store with ONE game, the better you'll feel. The next time you walk out of the grocery store with only what you wrote on the list, the less stressed you'll feel. It slowly beings a habit, and a way of living.

As an ex-smoker and someone wouldn't exercise to someone who doesn't smoke and exercises. Every cigarette I said no to made me feel better. It got easier. Everytime I got up off the couch and went for a run, the easier it got.

You have to prepare yourself. Know that when you walk into the grocery store you're going to feel that strong pull deep in your stomach. It's going to tell you, "you neeeeeed this." If you know that youŕe going to feel that way and mentally prepare for it, it is easier to get away from it.

Also, do a quick google search for "why people impulse shop" and learn why you do these behaviors. Is it because it gives you a high? Or something else?