Fair point. I'd say as far as strategies goes its one of the better ones.

30+ days is enough to get at least a semi-objective indication of physical dependence, which is a good start.

I've heard 40 days is enough to develop a habit (or break one), so to me this is a good period of time to try to work out the kinks of getting into (or out of) something.

Man that's jaded and cynical. There's a world of difference between assuming total control and tweaking your routine in hopes of living better.