I agree with Dee on this as it's something that I'm certainly dealing with at the moment. I've stayed away from telling co-workers... even if I like them. A lot of them can probably tell anyway. I have a couple close friends that I've told and they're supportive as always (lucky). I've told my mother and step father but they just don't get it... they say it's a good thing but since they both drink I think they are slightly threatened by it. I've noticed that with a lot of people (including myself) that when others quit drinking or quit smoking or start exercising a lot it can be a threat in our minds because it's something we know that we probably should do. It just goes to show how insidious this thing really is...
I love my parents and I pray they never have to go through this. When I told them about my problems with alcohol and the desire to quit I did it for MYSELF not for them though. At the end of the day it's just me and my higher power and I do find some solace in that.