I'm on this writing retreat working on my revisions (due 7/30) & of course a freelance clients emails like "we need help this week!"
But I'm going to have to turn them down! I have to get these revisions done and I refused to do "work" on this retreat!
hmmm... writing retreat!? is that good or bad news?
doin' fine? 
Good. Stick to the reason for your retreat. There will always be more client requests.