A) getting better at handling graph data structure,
B) learning how to use Regular Expressions as a code editing tool,
C) quit chasing every new thing, and
D) Typescript.
Having spent the last 20+ years building Web apps, I've only just started using React, due to company policy change. And quite frankly, I think it makes it much harder to maintain a large project. My company switched to React to make apps "easier to maintain for everyone" and in the process I've been the only one that has managed to learn React well enough to be productive in it. Most everyone else is really struggling with getting anything beyond the most basic stuff to work.JSX encourages sloppy HTML. Props are are overly verbose. Hooks are a nightmare. Contexts are gross. Portals are a stupid hack for the very, very stupid reason of making it nearly impossible for parent elements to read anything about their children. The whole "props down, events up" paradigm is woefully naive and half of React exists to get around it because of that.
So yeah, if all you know is react, you've already been on the hard path.