It seems kind of lazy to just randomly wander through potentially frightening situations. Here is a preliminary list of threatening situations, organized by category:
Rabies, stinging creatures, rape, murder, bankruptcy, the X-Files, the rural south, "zombies" (the designated term for the old women who wander the Upper East Side unsure of their own existence on either side of the life spectrum i.e. "am I dead or alive I will just put on more eyeliner and this wig and find out"), terrorism, anthrax, any sort of disease in general, heroin, the wooden spoons you get from ice cream from an ice cream truck, Joe Biden, cockroaches (guughhh).
Rabies, any group situation in which you are a loner (including but not limited to: parties, gatherings, meetings), "fun icebreaker facts" about yourself because you are either a) too shy, b) a jerk, first dates, second dates, that date where you're unsure if you're supposed to make out or not and you don't really want to but you do kind of like them, break-ups, telling someone they've made you unhappy (including but not limited to: bad friends, bad hairdressers, bad manicurists, bad graduate advisers).
[LIFE-BETTERING THAT REQUIRES YOU TO DO SHIT FIRST]
Marathons, accepting awards gracefully, telling someone they've made you unhappy, auditions, speaking up in class, attending events on your own, being aggressively kind, calling people during normal business hours so you might actually have to talk to them instead of just leaving them messages at 11:00pm and hoping when they call you back you don't have to pick up, interviews, first outings with potential new friends, first classes, standing up for something, trying new things in general, being genuine.
Yes, on some of these I cheated because I know I'm doing them tomorrow, and some I blatantly will not face either out of impossibility or pointlessness (i.e. Joe Biden or cockroaches, both of which are skeevy and I refuse to consort with). But that's a start.