Hey, Steve. The person who had the most positive impact on my sobriety is my husband, Myles. When I decided that I really needed to stop drinking, he stopped too. He was a "normal" drinker, unlike me. He just felt that I would have a greater chance of successful sobriety if he didn't drink as well. He was right.
There really isn't anyone who had a negative impact on my sobriety. Everyone I told was immensely kind and supportive of my decision.