Sometimes if I’m being irrationally creeped out by something it helps me to visualise it as being made of atoms. Think of the atoms making up the scary spider. The atoms aren’t scary. The molecules made up by the atoms aren’t scary. The spider is composed entirely of these molecules, therefore the spider isn’t scary.
Though some LWers may run into a problem with this method, given the purported tendency to abhor comforting falsehoods.