I'm in my mid-40s and making the same amount in Ohio as a "Senior Software Engineer". But, I've been with the same small company for about 20 years. No degree

I'm in my mid-40s and making the same amount in Ohio as a "Senior Software Engineer". But, I've been with the same small company for about 20 years. No degree, though, just self-taught and the odd online course here and there. I have the feeling that I'm shorting myself quite a bit, maybe by $30K or more according to the salaries I researched several years ago for similar roles (full-stack dev minus visual design) in the same town. My problem is I got comfortable. I get along with the boss and other employees (and one of them has been there almost as long as I have!), and am afforded some perks that are very useful, such as flexible hours, private office, no supervisor (just the boss/owner), etc. And, due to being "comfortable", I haven't pushed for occasional raises or seriously shopped around for better positions. In fact, I think the only reason I wrote this was for it to act as an attempt to nudge myself away from "comfortable". TLDR: don't get too comfortable.