Most beginning writers hate the writing/word choice type of editing. I do. Because, you know, I don't have a passion for sentence structure or epiphanies about typos.
But you know, the first and second drafts were a great time, and it's all worthless if the prose itself is garbled gobbledygook. It's no fun to read boring stuff. So you need to remember in this dark slog that it will be over soon and the sweet bliss of being finished is on the horizon.
Power through. Pay attention. And most of all, keep focused. It will be over sooner if you concentrate on editing without distractions. I guarantee you, this part will be over. Just work as hard as you can to get the thing perfect.