How mad do you get at wanikani?

Something that could possibly help is the script Mistake Delay. I also had / have the habit of hammering my enter key when I’m doing a large review pile. On cards that I thought I knew, I’d sometimes be surprised at the red screen, but would move past it before I could actually check what the correct answer was. …sometimes repeatedly. >_>

This script delays the enter input after an error, so that you have time to re-read the mnemonic, and not move past the card due to muscle-memory without knowing what your mistake actually was.