A preposition deposition

Well wouldn't you know, I was absolutely beside myself. Which was awkward, because it was a rather cliched position to put myself in. So I decided to be inside myself instead. After being inside myself for a while it was getting rather tight and I needed fresh air, so I decided to be before myself instead. It was great! Because that meant I was getting ahead of myself, though I also had to run to keep up with myself, which put me between myself and myself and it was getting rather like I was being inside myself again. So I put myself down, which meant I sat upon myself. Just as I felt like I was getting on top of myself, who should I walk into but myself? Just standing around on a street corner, being with himself (who was me). And because I ran into myself I was all of a sudden inside myself again, and it seemed like I was back to square one! Fortunately, I caught myself in time, which experience took me right out of myself, and I was overjoyed, I was excited, let me tell you, I was absolutely beside myself!