I hate when I get materials ready for a project, only to spend the available time doing silly things like planning. Measure once, cut twice (at least that’s how it seems to work lately). I once built a level yard from a sloped one, complete with a three foot high, 80 foot wide brick wall. Thirteen tons of fill gravel, probably three times that much topsoil, and 560 bricks at 27 lbs each. I moved it all by hand and wheelbarrow. The first couple of weeks, it looked as if I had done nothing whatsoever. Then it seemed to explode.
I hated all the methodical planning. But I hated laying the first layer of bricks most of all.