I wouldn't consider one a day as being bad. My problem is it wouldn't stay at one for long and I'd be back up to two packs a day in less than a month. One a day probably makes you cough once or twice and helps clear you lungs. Yeah right Chuck, try to justify having one lol.
I've been doing this for a year now, although last May it was 2 to 3 a day. My aim was to eventually not smoke at all. Now I don't know if I'll ever get to that, but the one each day doesn't make me want more. I vape 18mg liquid and have no cravings at all, so I don't even understand why I do it. Maybe a good psychiatrist could figure it out. lol