Glad you're back and sorry to hear about the behind-the-scenes friction on the forum. So here for everything you've written and so impressed with your goal-setting. I feel like I spent several years investing so much time, money and mental energy into clothes, simply because I didn't have the right ones for my body or my climate. Now that the dust has settled, I'm feeling pretty done with fashion-as-a-hobby. Like you, I'm not interested in looking like a person who buys into every trend that comes down the pike.
My mantra for the past few months has been, "Don't let your appearance be the most interesting thing about you," and will hold onto that going into 2020. That doesn't mean looking bland or boring, simply that I want my clothes to be something effortless, a backdrop rather than a focal point. I can't wait to hear about your new hobbies and renewed creative endeavors!
BTW, on the topic of music, if you don't feel like devoting storage space and budget to multiple instruments, have you thought about digital composition? I also wonder if there are drop-in jam sessions that you could join. Jazz jams and folk jams are pretty common where I live, and there are often people who bring multiple instruments and are happy to share. Fun way to meet like-minded folks.