I read somewhere recently it can take up to 10 days for alcohol to clear out of your system fully.
Only coming up to my third week this time and I was horrible the first week; angry and snappy. This week I managed a screaming, tantruming child many times without losing my cool. Last year I was a totally different person from weeks in to months in.
It will get easier, stick with it and don't let the AV fool you you're nicer when you drink cos hangovers don't put you in the best moods either.