One more general principle is that often a decision isn't as irreversible as it might seem. You could very likely spend a year or two trying to find a better fi

One more general principle is that often a decision isn't as irreversible as it might seem. You could very likely spend a year or two trying to find a better fit at other companies, then return to this job, possibly with much better pay, and content that the grass is as green as the rest. Also, something my brother told me years ago is, "if you're trying to decide between two things, try to pick the one that lets you do both."