As a professional declutterer (in other words, people pay me to help them), I have seen it all. And what I've seen is that people hang on to the most amazing things thinking they're going to need it "some day".
That day is here, my friends. If you have clutter in your home, get out your kitchen timer for a fun new game! Pick out one section to declutter: make it small, like a desk drawer, one shelf of your pantry, just the shirts in your closet, etc. Set the timer for 15 minutes and start decluttering. Take everything out and only put back in the things you truly need. When the timer goes off, you are DONE. Even if the area isn't clean, put it all back, close the door/drawer and walk away.
The point of doing this is to A: Show you that you're lingering too much over your tasks. B: To encourage you to MOVE IT! C: To keep your decluttering time to a minimum so that you can enjoy your friends, family, job, or whatever you have to do that is important. When you get good at the 15-minute challenge you'll be able to take out all your towels from the linen closet, refold them neatly, and put them back (ideally with some scented shelf paper). Your junk drawer will become more orderly. All the brushes in your bathroom drawer will be "de-haired", as will the bottom of the drawer
Whenever you start decluttering, create a "memory" pile or box for all those letters, pictures, tokens, etc. that you tend to re-visit and coo over. Save that box for later on when you're not busy decluttering. Do not get side-tracked, or the timer will ring and you will have lost.
Don't make the mistake of thinking that objects are memories. A client of mine was hanging onto the make-up bag his wife used, even though she has passed on, he doesn't use make-up, and no one else wants it. He remembered that she used to tote it around everywhere with all her toiletries in it. I worked for them for a year before she died and never saw her use it once, so he was clinging to the past. I told him to remember the way she looked when she'd used the items in the bag, and let the bag go, which he did (and he was fine with it). True memories can be saved neatly in scrapbooks and bins so that they're available. If you "come across" something special on the floor of your closet (or wherever), it wasn't special enough to store well, so pitch it.
You really only need one of anything. If you have two bundt pans, two mixers, etc., start paring down. If one was your mom's, and you love it (like I love my 70's beige Crockpot with the mushrooms all over it), then relinquish your newer one so that you only have one. I do like having Crockpots in two different sizes, though.
Are you getting motivated? If you'd like more tips and hints, let me know and I'll post. At some point I'll have to figure out how to post pictures of the befores/afters that I have. Some are truly frightening! Of course, the afters are all amazing