Overpacking is something I won't do again. Some brilliant "experienced" tourists told me clutter like fishing line and clothespins were going to be useful! But there's really no way to learn what you'll actually use without carrying it for a bit and trying it out. I'm sure fishing line and clothespins were lifesavers to those who advised I take them.
I wouldn't attempt to bring cooking apparatus again, either. Weight, clutter, and the hugely inconvenient task of doing cooked dishes without running water made it not worth the effort for a little creature comfort. Cereal and nuts took me where I was going.
I will never, ever enter the Southeastern wastelands of the US without reliable motorized transportation again. What horrible heat, what horrible terrain, and what horrible murderous inhabitants. The silver lining is that I finally got to see what White Supremacists are so proud of: meth addiction, toothless wives, chained mutts, and that beautiful Dixie flag flying over their rotting hovel.