A portentous reunion
Bryan Cantrill talks porting code, but really this sounds applicable to any creative endeavor:
it is very difficult to have forward visibility as to progress. That is, you can feel deceptively close to your goal (only to discover some major piece that needs to be rethought) — and you can also be deceptively far (what feels like smoldering wreckage is sometimes but a single fix away from functional software).
Also: reminds me of golf. One moment I’m cursing “I hate this stupid game”. Then I get a good shot, all is forgiven, and I setup a tee time for next week.