What areas of my life do I hang on to something past its time?

I saved an old monitor for years because it has the right connections for an old computer. I went looking for it today and realize I likely packed it up with a roommate’s belongings when they moved out last year. I realize how long I took up space storing it and didn’t really need it after all. I could have been free of it 5-7 years ago. I wonder how many other areas of my life I hang on to something way past its time, letting it take up otherwise valuable space. Only I decide what’s valuable…