Hi back2thegoodME, The topic of social circles has come up a fair amount recently on this forum. I believe most of the seasoned vets will tell you that prying yourself away from those people/relationships makes not drinking much easier. To remain is nearly torture.
You also mentioned you are mostly a happy drinker...until (something happens). Obviously the chances of someone saying something or happening is far greater in a social atmosphere of a bunch of people drinking. Wishing you best.