I think a good tell is that when I want to practice for interviews, what I do looks very little like what I do to actually get better at my job. The hands-down

I think a good tell is that when I want to practice for interviews, what I do looks very little like what I do to actually get better at my job. The hands-down most effective ways to practice for it don't much resemble legitimate continuing professional education (i.e. drilling leetcode on physical whiteboards) and, if they help me get better at my job, it's only marginally so and essentially by accident.