A wonderful high school English teacher I had said once you have learned the rules, then it's okay to break them. But when you break them, you have to do it with a purpose and it has to be for the better.
And that's my first rule for writers who hate writing rules.
DO learn the rules of grammar, punctuation, and sentence structure before you start tossing all of them out the window. Know how to write well within the boundaries first.
I don't hold to the "We're new writers. We're not allowed to break rules!" attitude. It makes me feel insulted and angry. Just because you're new to publishing doesn't mean you're new to the English language and the writing craft. Only you can make the call that something isn't working. Yes, even if you get criticism out the wazoo, it's still up to you to do the editing.
Which brings me around to the second rule.
DO get another set of eyes (you're not related to) to glance over your work. And when they mention something that didn't make sense, take it into consideration. Get as many pairs of eyes as you can and weigh their responses. Then decide what to edit.
Even if you think you're God's gift to literature, it's still prudent to have a proofreader, beta reader, or creative partner (CP) to offer a second look to your manuscript. You can only benefit from a new pair of eyes and a fresh perspective. When we're up to our eyeballs in word vomit, we can't always see the mistakes, the changes of voice, tense, or glaring catastrophes of sentence structure.
The last rule I'll mention is along those lines.
DO consider what the professionals have to say. You can have a hundred CPs and beta readers, but a trained editor can spot trouble faster and offer suggestions they might not have thought of. Editors can see the bigger picture regarding plot and character development - things your CPs might not want to touch with a ten-foot pole. Use their experience and get your work in front of them whenever you can.
And that's it. Three rules for writers who hate writing rules. Bear in mind, if you don't have a handle on the first rule, you're not ready to move on to the second two.
If you have any Rules for Writers Who Hate Writing Rules of your own, please share them!