Quirkster have you ever been able to refuse smoking while with your friends and just let them get high as you sat back and observed?
F you have done it once you can do it again. it may very hard to do every time but just remember the time of not accepting to get high, but still with them.
I'm sure eventually you'll get tired and see some thigh you hadn't before while being sober and around high ppl.

If you have never been able to refuse when offered, have you tried?, and if you have tried but failed and still smoked it up with them, what does that mean to you?
Outside can be great with out getting high!

I'm sorry if that comes off wrong