“Lay out all your things, then take half the clothes and twice as much money.”
I don’t know about anyone else but I still find myself writing up lists on what to pack for various trips, then leaves packing until the last moment and doesn’t bother to read the list.
When I packed for a quick trip to Europe to see my friend get married, I packed the morning I was due to fly out. Given that I didn’t depart until 11pm, that seems like quite a while, however, I started work at 10am and was then headed to my sister’s house for dinner before she drove me to the airport which is still a good 1½ drive from her house (two hours from mine). I had to make sure I had everything I needed for the week plus a change of clothes for after I finished work in my suitcase at 9am.