I have had so many which can easily lead to imposter syndrome.
Believing that you need to be good at maths to be a programmer which is a misconception
Thinking that you had to be highly intelligent like a NASA scientist or someone who works at MIT to be successful
That you need to have a computer science degree or a degree from a top university to get a good job
Needing to know Data Structures & Algorithms to be good at your job (these days it seems to be common if you are interviewing but on the job on a day to day basis not so much)
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I have had so many which can easily lead to imposter syndrome.