There is learning for fun and learning for optimization, and if you're lucky there is overlap! There probably no shortage of things one could learn to optimize

There is learning for fun and learning for optimization, and if you're lucky there is overlap! There probably no shortage of things one could learn to optimize for handling +ev situations better in the future, but learning for long periods of time is difficult if you don't enjoy the actual subject. I recently got into learning about hydroponics and tennis coaching and I don't feel the pressure to make those things a part of my career development.