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Meme music also does the trick. Nothing can get you if the mood is off.
Protip for if you’re alone and find yourself getting jumpy because ‘oh shit this feels like the start of a scene from a horror movie’:
Do something that a director of a horror movie would never put in a final cut. Pull sudden and inexplicable stupid faces. Make up a ridiculous shuffle-dance. Sing that song with the weirdest lyrics you know, loudly and as off-key as possible. Be completely unphotogenic and uncinematic, and it counteracts the irrational fear quite nicely.