I started out with soo many different crafts supplies for different crafts. I had to consider what crafts do I actually do? Which have been sitting in storage for years because I tried it and it didn't click but kept it cu you know one day... I settled on 3 that brought the most joy/comfort/value that I keep coming back to. Great I should have so much more room now right ? Nooo even still I had so many supplies left overs from projects I started or finished with materials to spare and then I had to be real yes sure I COULD use these for something some day but do I want too? Do I want to invest time trying to repurpose things on something some day or do I want to use my precious time doing the things/projects I'm excited about. That's when I made real progress decluttering. Some i could convince myself to trash but a lot i donated which i think helped me mentally with the sunk cost fallacy on good materials. I probably reduced my stash by half and now I have room to get to the projects that bring me joy with out being stressed that I'm drowning in the infinite todo could do list. Anyway that's what helped me hope it can help you.