I know exactly of what you speak; possessions, not even many, feel like huge anchors. Compared to many, I never had much "stuff", but having been divorced, and loading a U-Haul 10 times in the last four years, has caused me to cut way back. My hobbies tend to be heavy; shooting and vehicle repair tools. At one time I had about 50 firearms, many hundreds of pounds of reloading equipment, lead ingots for casting... I have steadily been selling some of it off, or simply giving it away to a beginner. I really went through my tools, prioritized, and now am down pretty much to a single, two tier roll-away tool box, and a few totes worth of other tools. I can now fit everything I own in the world, in a 10' U-haul. I really wish I could fit everything I own in my 2006, manual transmission Toyota Matrix! It would really allow me more freedom of movement, and simply more basic "freedom". I remember how this felt, and I miss it dearly.
I have always been very introverted, frugal, and a minimalist. The older I get, the more I simply like to go for walks, volunteer, read, drink tea, bird watch, think, simply count my blessings, and be grateful. Good luck OP.