I suffer BPD, complex PTSD, severe anxiety and Depression, and am in a serious relationship with weed! I use it as a crutch for my anxiety, I wouldn't say I have an addiction... cause if I don't feel like it I don't have it for a few days or more! But I use as a substitute for Valium, I find due to my high anxiety, it doesn't have the same effect it seems to have on my friends! I'm currently unable to work at the moment due to my therapy, but you sound like you are in a sticky situation running a group while you are suffering at the same time! Wish I had some advice to offer! Maybe think of what would you say to yourself if you were sitting across from yourself in your group? Personally I don't find (MJ) to be a problem that affects my day to day life (mostly no one picks up that I'm high)
With the trigger part, I feel more like smoking if someone has spoken about it.

It's what makes you beautiful, so fists into the lips of fashion - Amanda Palmer