I think people who make broad statements like "get over it" just need a little "focusing"

Next time someone says that specifically to you, ask, "Get over what?" like you're clueless and it's a novel suggestion. Keep making them clarify exactly what it is that you're supposed to get over. I think it's a "throw away" comment, like swearing because one doesn't have enough words to say what one "means" (or enough brain power to mean what one says) and purple_fins thought that they just don't want to have to deal with something or someone they don't understand is close to what it means.