Completely agree. My Dad and I are doing it together. Everytime I want to quit, I think "how sad for him...he's gone all this way." It's easier to do it with other people (either at home or through this forum).
I told everyone at work and now I don't get the "weirdo" looks when I'm making my lemonade in the lunch room. Also, I made sure I didn't have any family commitments (weddings, b-days, etc) that would interfere this week before starting.