A quiet place

I used to have a quiet place to go, to think, but that has changed. The car isn't quiet - I need to call with my whereabouts. The bubble bath isn't quiet - there are knocks on the door, someone always seems to need to get in. So I have (currently) narrowed it down to the tanning bed - music loud, phone off, 15 minutes for me... too bad my brain won't shut off! This sucks!