I went from being mostly frontend focused to working almost exclusively on backend and while I was able to get a generous pay bump, I found that I was generally

I went from being mostly frontend focused to working almost exclusively on backend and while I was able to get a generous pay bump, I found that I was generally much happier to just be working with Ruby/Rails almost full-time. Even though I was not as proficient right away. I guess what I’m trying to say is if you end up focusing on working only with what you’re proficient at, you may be missing out on other opportunities that you may end up enjoying more long-term.