I’m almost 30 but still treated like a school kid—how can I make it stop?

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If I do something wrong I feel like the team leader guy will give me a sigh or raise his voice like I’m done school how is this possible if I’m in my 30s now
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5 h
I’m school kid how is this possible***
I’m almost 30 but still treated like a school kid—how can I make it stop?
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