That's funny to me because my brother and I are opposites, he's the OCD/ADHD that labels every single part. I'm the "I'll remember where all this **** goes" who rips it apart. Fortunately I have been able to remember most things that I have taken apart and reassembled everything with little trouble, so far.....
i only tend to label wiring, bolts get put in boxes. these are usually front of car, back of car etc so i know that bunch of rusty bolts go there etc. it works for me.