Thanks for this write-up. Imposter Syndrome can be so tough to manage! I've had my ups and downs related to it, so a distilled list like this to reference when its a slump is a really helpful formalization.
One of the worst-feeling experiences of recent memory for me was sharing with a superior in a 1-1 setting the feelings of imposter syndrome, and the response being disgust and the reply "maybe it's true, then? Imposter Syndrome is a weakness and and a problem". That definitely hit me pretty hard, but falling back on wins and remembering things I've done well in the past was how I got over that initial horrible-feeling gut punch.
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