Great comment, especially last sentence - no mental benefits of being sober in a short run. You can even start to think on 3rd month - why I did so if nothing changed? But after 6 months you will feel much, much better, I can confirm this and I heard this opinion few times from quitters.

Some people might expect enlightenment after week of sober life. Never understand why, if alcohol require years to turn you to an alcoholic, how you can back to normal life in a week time?