Signs I'm Overthinking Things

Today I said something about a person not having a great track record. Then I thought "they aren’t even a runner, why did I say that?" I thought for sure it wasn't going to be one of those things that kept me up at night until I needed a sleep pill. It's just what you say when someone is unreliable. I thought that this had more to do with track and field events like running. According to Your Dictionary it's related to dog racing, which isn't very nice to say about people.