This is why there's always cookies, cake or candy at AA meetings - sugar intake is very common way to curb an immediate craving. In general balancing your diet with healthy foods can help, but the causes of addiction run FAR deeper than diet. Sugar intake is just helpful in early sobriety to feel less jittery. Too much caffeine can work against you though and make you feel edgy, so keep an eye on how much of the Joe you're drinking, and if you feel like taking a drink, pick up the phone and call someone who can help and will support your decision to stay sober.