Jenni, I have been following this thread since you posted. In rereading your post just now, it sounds like you felt a bit out of balance with your 200 plus items and so tried the Rule of Five that you read about to try to bring some balance. Well, you went for it and you did it! But now you say: "Getting dressed doesn’t feel as much fun". I would take that as perhaps the experiment worked in that you found you could, in fact, do it and only bought four items, but also worked in that you found you lost some of your joy with clothes...?
I find all these ideas floating around about how we have to reign in...one in, one out, or whatever...while fun to take on a challenge at times...are often a miss for me because it's not actually helping to train me to pay attention and learn my balance. People who share these ideas are sharing what works for them, and gosh, it can be helpful. But it sounds like it wasn't a substitute for your own discovery of what consuming less while having your joy would look like for you...?
For me, an outer constraint to buy only five things sounds like an artificial imposition that could preclude a lot of spontaneity and fun. Ends up that I acquired eleven new items last year. The expense for the whole year was what I sometimes spent in a month years ago when I had more income, but it's balanced with my current money flow. I bought two more items, but those were donated back to the thrift store I got them from. I experimented with not buying anything...or shopping...for three months in the summer and it was a bit depressing (but the heat often makes me feel that way too! ). But it was informative. I realized I'm so appreciative of all the clothes I own and that can be it's own satisfaction (stability) but also a new piece can infuse some refreshment (novelty) into the mix. And I need that at times.