Remind myself people live where I'm going and whatever I forget to pack, if it's that important can be found in a store.
Otherwise my preferred method is to pack right after I'm all caught up on laundry. Also I try to pack everything in two bags: a carry on (actual international size carry on), and a backpack.
Yeah necessities are a phone and wallet and that's all then anything that's missing, there's always a Kohl's or similar somewhere.
Personally the one positive of airlines jacking up the bag check prices was learning to pack light to just carry on and I go by the same principle for car trips. I bring a surplus of underwear and socks but otherwise I'll wear like two shirts and pairs of pants/shorts the whole time except for outdoor gear. If none is available I'll find a laundromat if needed.
One thing I try to pack is running shoes/clothes as I think it's important to keep that sort of routine going on vacation and that will get washed too.