I think it’s because others, whether they realize it or not, inherently doubt me
It's completely normal to doubt people until they somehow prove what they're capable of. Picking up on this doubt and internalising it might just be a bit of a self-fulfilling prophecy: you feel like everyone doubts you, so you become very careful in expressing your opinion, so the others never get to see what you're actually capable of.
Maybe this is a matter of some internalised misconceptions about what a programmer should and shouldn't be like, or maybe it's simply a matter of personality. Either way, showing others what you're good at is the only way for them to know, and to break out of the loop.
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It's completely normal to doubt people until they somehow prove what they're capable of. Picking up on this doubt and internalising it might just be a bit of a self-fulfilling prophecy: you feel like everyone doubts you, so you become very careful in expressing your opinion, so the others never get to see what you're actually capable of.
Maybe this is a matter of some internalised misconceptions about what a programmer should and shouldn't be like, or maybe it's simply a matter of personality. Either way, showing others what you're good at is the only way for them to know, and to break out of the loop.