What Helps People Moderate When They Haven't Been Able to Before?

Some people can't have just one and it varies from substance to substance. What helps is having a very specific plan so that you're still not making decisions at the moment of impulse. Some people who got really carried away with bread will then say, well, I'll only ever have two slices  and suddenly they can do that as long as it's not worth it once a week. There are a lot of things you can do to make it maximally likely you'll be able to.