Nerve-wracking or nerve-racking — what's the difference?

In this article, I will compare nerve-wracking vs. nerve-racking. I will outline when it is appropriate to use each spelling, and, at the end, I will give you a useful memory tool that you can use to decide whether nerve-wracking or nerve-racking is the word you want.

TL;DR: "Nerve-racking" is a lot more common so stick with that unless you are following a style guide that says otherwise.