for me it's not so much a craving, not like I have to go and vape like mad to get rid of it, just more like I'm missing something..............a bit like having a hot chocolate without cream on top (if that makes sense). the first time I tried to quit it was always the morning that got me, so I'd say "just the one to startthe day won't do any harm", but then I would end up using that same philosophy throughout the day and before I knew it I'd be back where I started. Now after increasing nicotine I no longer have any urges, especially in the morning. just after food I feel like I'm missing something.................and let's be fair, as good as e-cigs are, they just don't give you that satisfaction like a real cigarette did. imo