Interesting - I will definitely look into that. I remember having no fear of flying the first time I flew (when I was like 7 or 8), but I remember looking at my mom during takeoff, white-knuckling the armrest. I've also foolishly done a lot of research over the years on airline disasters, but I think from there on out something in my mind switched from this is fun and interesting to this does not feel safe.

One of the things you get from ACT is; if your mind can switch from "this is fun and interesting" to "this does not feel safe" then it can just as easily switch back.