Does anyone else feel this?

I feel really unintelligent, I don't know. I got told by people my whole life I'm not smart , And I feel like it's carried on with me through life, I don't think I'm smart enough, good enough for a career or job that is mentally stimulating. Right now I work for ferry line and work in the cafe, and it's a lot more than what it is, lots of marine safety and drills to know, but I just feel too dumb for it to stick and that worries me I'm not even good enough for that.

Does anyone else feel this?
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