Having suffered severely from impostor syndrome for a few years, I caught myself asking a lot of really useless advanced questions that made me feel/look smart, and ignore the simpler but useful questions.

I was afraid that I would spill the beans on being a fraud who had no idea what he was doing, so I'd pretend that of course we'll use library X to write algorithm Y, but then bring up unnecessary complexity about implementation details.

One significant transition I made as I started to feel valuable and deserving of my position was to stop asking stupid questions and start asking simple questions.