Comment by rewgs
Technical:
Audio programming with C++. I was a professional film/game composer for the first 10+ years of my career, but when I started programming I was mostly interested in solving problems that required web and infrastructure skills. Also, I always looked at C++ as something to tackle once I was a better programmer -- I now think I'm a pretty okay programmer and am ready to take it on. I'd like to eventually do a deep dive into Rust as well, but I'm focusing on C++ first, as the vast majority of audio programming is still done in C++ and likely will be for the foreseeable future, and I think learning Rust will be more valuable once I've run into many of the pain points that it addresses.
Non-technical:
Improve my archery. I started this year and love it.
Have you ever done anything with tone.js?
I think of this completely opposite. C++ and audio is the incumbent relic that will progress one funeral at a time. Librosa and Pyo are just incredible in python but for offline processing.
Rust and audio would be really cool in terms of wasm. Anything VST is IMO a complete waste of time. That was saturated 15 years ago.