I did!
I was reading through the books and just starting to go through the process when I decided to Konmari my marriage and throw it out :lol: When I left, I used the techniques to decide what to take with me and what to leave because I had so little space to take anything. Almost all of my possessions were left behind and it was very freeing. I didn't do it traditionally by category, but just as I packed things from each section. Luckily I had the freedom to come back for a few things I regretted leaving behind but for the most part I never missed any of it.
Since then I've gotten rid of more things that no longer spark joy. Some stuff is still "well I need X thing so this will do for now" but for the most part I love almost everything I have. I no longer buy "placeholder" items, unless I absolutely have to, and that's honestly made shopping feel much more rewarding and less stressful whenever I have to do it.