Seriously, just do it. Do it as soon and you settle in before it doesn't seem important anymore. The longer you wait, the longer you'll keep pushing it off. You're listening to music? Blast it and do little by little. Make a little goal and say to yourself, "I'm going to do these two boxes and then take a break".
Just doing that will ensure that you get everything done while you're still motivated. Take it from me, it takes me months to unpack and I finally realized that it could take less than a day to get it over with.
When I moved into my new house this time, I really just told myself "the fast you get it done, the faster you can nap!" It worked like a charm honestly, and I felt so much better about myself since I did it as soon as I moved in.
Once you lay everything out and find a place for your things you can learn what you might have forgotten or need to buy, or it could inspire your inner interior designer and change the room around a few times.
During this quarantine, I changed the layout of my room at least 6 times and I'm not any closer to finding something that I like. So if you're like me, your mind changes or you get inspired by something and want to do something new… or you simply can never decide what you want, this is the best reason to just do it.
There's also that satisfaction in throwing away all the bags and the boxes and stepping back and saying to yourself, "I am so happy that's over".
So I'm just here to encourage you to get the damn thing done.. it's so much easier to just suffer for a little while but then not worry about it ever again.