There have been a lot of times where 5 minutes has made a huge difference for me. At one of my lowest points I would count to two seconds and then say "okay you made it two seconds, you can do that again," eventually I slowly made it up to a few minutes. I personally don't believe you can prevent the cravings indefinitely, si has helped before and I thikn in times of stress our brains will instantly think of si as an option to help, but the impulses do lessen some in intensity and frequency. When I first quit I would usually schedule myself in 10 minute increments. I will watch tv for 10min, if I still feel the need to si I will journal for 10, if I still want to I'll paint for 10, then do homework for 10, then chat for 10, until it got so late I couldn't keep my eyes open. I spent a lot of late nights here on support chat. One great thing about here is that there's so many people in different time zones you can almost always find someone on.A few times I've called crisis hotlines to get me through when no one was on and it was the middle of the night and too late to call most of my friends.