Moving helps in the same way.

You have an extra benefit in that you will have this fresh space that you can look at and configure or outfit to help w/ storage. Install shelves, hooks, cubbies, etc.

One of my big mantras is "infrastructure!" (do a search on that word on the forum, and you'll find some of my musings)

It's no accident that the FIRST phrase of the cliche is "a place for everything"!

When I was younger, I moved frequently. Every move was an "opportunity" to go thru all my belongings and discard things I no longer used. I can't tell you how many food containers and butter tubs I chucked! A renovation is like a move. You do have to handle everything you own, even if it's just "the upstairs". It gives you a chance to see everything, decide if you love it/use it and to find a permanent place for it. Have fun!