But now I do. And I can't tell you how much it has helped in drafting.
If I start to feel off about my story, now I stop to think about my choices. There's something wrong with my plans, and usually it's that I've taken the long route or made things too easy. Both make things boring. Both are likely fixed by making it worse for your characters, in one way or another.
Example: Just yesterday I was not feeling the chapter I was working on. There was something terribly off. Yes, I was following my plan, my outline, but I didn't like what I planned. I had this whole section where my MC was going to succeed at something and it would give her hope, but then she'd ultimately fail at it at a crucial moment. It would have taken at least 5k to write this. At a point in my MS where I need to be heading into the Big Moment.
After stewing and whining about it all day, I finally realized what I should do—have her fail up front. Basically, make the entire situation completely hopeless. No boost. Nah, let's remove what little she had left and then force her to make an impossible choice. Yes!
It so worked. It's totally evil, and way worse than what I'd planned. But I know I just saved myself a lot of cutting later on. This is the perfect setup I was looking for going into the climax. All I had to do was make it worse.
*evil mastermind cackle*