Anxiety Attack

I used to think it was claustrophobia. Once or twice a year, I would wake up in the middle of the night and I would feel closed in. I usually would end up going to the backyard and sleep outside for the rest of the night. It has been a longtime (2 years?) since the last time that has happened.
It was fine before, my dog would hear me go outside and hang with me until I fell asleep again. Now that he's gone, it's a little harder.
I think I am going to need to go on another DRIVE. Hmmm... where to this time?