Yeah, I get frustrated easily, but it's also easy for me to get frightened. Not sure which one is worse though. In frustration, I can randomly hurt people but it goes away quickly and does nothing with my heart and executive functioning. Fright, on the other hand, can come from something as little and irrelevant as someone speaking loudly to me, and it results in full-body "freezing" or involuntary running, and my heart hurts afterwards. It's also incredibly exhausting.
Interestingly, frustration comes when I feel everything is going right on the large scale and I'm feeling dominant enough to be angry, if that makes any sense. I contrast, fear comes when I'm already in an unstable position (eg. in the middle of an administration task I don't even understand - like this whole friggin' month).
Also, it's easier for me to get frustrated in a brightly lit environment - and easier to get frightened when there are high-pitched, sudden noises. One of my biggest pet peeves (read: thing that can get me howling and jamming my fists into the wall) is when there is traffic noise in the background and I'm trying to have a conversation. The noise blocks out speech so more than half of the incoming information just gets lost. Sometimes unnoticed. Then later I notice and...aaargh!
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"...unless you have a morbid fear of dying."