Continuous learning and studying outside of work. I know being a workaholic is not good but if you really enjoy what you do and you have big goals, getting the discipline to learn something new every day, pays huge dividends short and long term.
Do you apply everything you learn regularly or something? I like learning new things (by watching nature docs or the like) but it feels like I am unable to recall what I learned a few weeks to a month down the road.
I still agree that learning something new every day is ideal, but it seems it'd make sense to carefully structure that to focus on things you might reasonably make use of.