I know this is not a very comfortable answer but you just do it Snoozy.
I found I was a lot stronger than I ever gave myself credit for.
I've been able to be there for others and been able to process things naturally, and sometimes I've had to grieve too.
It hurt, but it didn't kill me - I think maybe I grew a little even.
It's scary I know but I know you can do this sober and you'll be glad you did - honestly.
Prayers for your friend, and for you
D