Friday Open Thread: How do you train?

Do you always follow a training plan when you’re getting ready for a race? Or do you simply run by ‘feel,’ and run the speeds and distances you feel are right for you? One of the things I’ve always wondered is, as you gain more experience as a runner, how much you need to depend on training plans vs. how much you simply listen to your own body. What works best for you? — Terrell