2018 was of great use to me. Joined SDF, started hosting my JS-free blog on it. Read about 3/4 of GEB, started some sort of academic research on AI... and now I'm finally going on with nand2tetris (and hopefully returning to SICP as soon as I finish GEB). All of that not counting IRL of course.
Let's hope 2019 is just as joyful and productive 👌