I know, rationally, that I'm competent. That does not prevent me from feeling like an impostor and having nagging self-doubts.
Terrible cycle, but it's according to this article if you were an imposter you'd probably think you weren't. Uhm. This probably isn't helping. Good luck with your imposter syndrome!
:-)
Of course, if I were, I probably couldn't comprehend the thought in the first place, so rationally, I know I'm not. A lot of it probably comes from reading things from/about people infinitely smarter/more motivated than I am, and feeling like I have no idea what I'm doing.