How do other people do it.

I am plagued by disorder. When I am on a road trip and I am taking photos...pulling over, getting out to shoot, looking at the map, changing lenses, taking these glasses out to read, then back to the other to drive...the phone is in there somewhere with its charger..all kinds of stuff, a jumble. How do I end this. I tell myself, slow down and just make sure that everything is back to neutral...it seems impossible. I start thinking I need a box to put things in, but it would still be in a jumble. How do others handle it? I hate this disorder it is one bane of my existence. I have a few. This extrapolates to packing for travel and unpacking at a destination...I am always regrouping...its tiring.