Hi Maimai!
Cool project, I'd love to see the results!
My minimizing came in waves. Growing up, my family were always neat and organized, but not minimalist at all. As a kid I accumulated a lot of things, had several collections and was very attached to all my things. Then we moved across the Atlantic to Canada, and we took only the bare minimum with us. That forced me to become quite pragmatic about my things, and take with me only the things I held most dear.
After a few years in a new house, I'd started to accumulate a lot of stuff once again, to the point where I had trouble fitting it all in my available storage, and cleaning and organizing were constantly needed. I was never terribly messy, but having things out of place bothered me, and the sheer abundance of stuff made it a chore.
The following purge came when I moved into my own apartment, and I had to fit everything I owned in a little studio. Luckily, I had ridiculous amounts of storage (closets and built-ins) for such a small place, so I didn't have to pare down too much. However, a year or so later, I moved in with my boyfriend and we both had to reduce our possesions quite drastically to make them all fit into a 1-bedroom apartment with less storage than we'd each previously had. We both have a bit of a minimalist esthetic and we're dancers who love having room to practice, so we agreed very early on that our house would be serene, minimal and easy to keep clean with 2 grown-ups and 2 cats.
Over the successive waves of getting rid of stuff I realised that having more wasn't making me happier, it was only stressing me out in much the same way that having too little can stress you out - excess can be just as taxing as want. My decision was never to cut down my possessions to the bare minimum, it was only to eliminate excess things, unused things and unloved things from my life. Rather than minimalism, it's a return to balanced living.