In my case it's similar, but specifically I overpack work stuff (camera gear, mostly) thinking I'll be taking time during vacations to film personal things/try new techniques/update my website/plan future shoots/do marketing/etc etc etc. All the stuff I never have time to do while grinding away at home.

Sometimes on big road trips where we don't visit family, I manage to film some personal stuff (landscapes, etc), but right now we're on the annual family visits trip and feeling like fuck no am I not gonna bother haha. Then I spend the whole time complaining about why on earth I felt the need to bring this cumbersome stuff every time I'm packing the car...