Fear of Time
I'm not sure, but I think I suffer from Chronophobia. The reason I'm unsure is that I don't fear time as such, I fear not having enough of it. It's a strange thing, like some sort of genetic-level impulse, an instinct, that means I think I'm running out of time, or causes me to worry about running out of time even when I needn't. It isn't a constantly running thing, it doesn't hit me every second of every day, but when deadlines are looming and when I sit back and do a kind of life assessment, you know, to take stock, it rears itself as a deep churning sensation in my stomach and feeling of pressure on my brain.