80% statistic sounds like something a pot company made up.

Frank from YouTube said you gotta scrape it perpendicular to the filler strokes.

Getting a beat up journal and writing down one thing from each place helped me see the progress later. Didn't track countries on purpose, just jotted down what I ate or who I talked to that day. After about two years I flipped back through it and counted the locations mentioned. Came out to 18 countries and I was honestly surprised because I never stopped to add them up while I was on the road. That physical record made the number feel real even though I wasn't thinking about it at the time. Kinda like how you don't notice a plant growing until you look at a photo from a year ago.