It is very interesting to me that I would suffer so much with this as I am a true believer in travel light and keep it simple. But something comes over me at the last minute and I start rethinking my entire packing strategy, everything from what clothes to bring to what bag to put them in, truly unbelievable and very stressful. That is the reason I do an initial pre-pack a few days ahead of time, just so I can rework every aspect before making my final decision the night before. I can tell you that it does help minimize the anxiety but does not eliminate it. Now mind you, I do not travel into the wilderness where there will be no resources to get whatever I need and I have never, ever been anywhere that I could not get something essential but still the dread looms. What I have to do is bring it down to the absolute basics - if I have my passport, wallet and phone I will be fine and I know I will have a wonderful trip!