Mine so far: 1. Aiming to pass B2 exam for French (meets all 3 criteria above) 2. TLA+, hard to measure progress, stretches my brain in a different way, but practical utility is dubious 3. Category Theory, similar to TLA+, but even harder to find pragmatic applications.
Am keen to hear from others.
I'd like to develop an electronics project from design to small-scale production run (not necessarily for profit, but hopefully covering production expenses).
I want to change career from SWE to Quant Trading.