My fear of getting lost.
My first visit to Tokyo was a sensory overload unlike any I’d ever experienced. The sheer bombardment of sights, sounds and smells coupled with the labyrinthine train system are enough to give even an expert gamer synesthesia. I honestly never thought I was going to be able to get around a monstro-megalopolis like this.
It took me a few months (and a ton of mistakes) to get some semblance of my bearings, but I eventually realized that even if I did get horribly lost, I could usually find another train stop, a bus, or a helpful local to get me back on a track. Nowadays, getting lost is just another part of the experience, and almost always leads to an interesting story.