At the time, I thought that was it: a bad trip but glad it was over. But over the following months I developed a chronic anxiety triggered by all sorts of things. First time I noticed it was next time I was in a hotel room; I had a panic attack and had to call an ambulance as I didn't know what the fuck was going on with my head. Then, other things became triggers. If I happened to be thinking of either of the hotel room incidents and felt anxious, then whatever else was present at the time would become a trigger for the anxiety. This included internal thought-triggers and external visual and situational ones. Over the next couple of years I had panic attacks in all sorts of places, sometimes seemingly apropos of nothing.
Anyway after a couple of years I managed to get it somewhat under control using a combination of anti-depressant medication and cognitive behavioural therapy. But even now there are some situational triggers that will make me exceedingly anxious, and earlier this month - after several years 'clean' of attacks - I couldn't hold off the anxiety and had another really large attack. Though I was very stressed about something else so I suppose my background levels of anxiety were high anyway.
Before all this happened, I was a pretty relaxed and chilled out kind of guy. It makes me sad that I'm never going to get back to that state of mind. When I look back at recordings or writings of the pre-mushrooms me, he seems almost like a stranger. It's very odd.
This of course is not necessarily a typical experience on mushrooms, and I suppose I was predisposed to this somehow, but it was a very unpleasant way to find this out.