Why do others seem more confident in my abilities than I am in myself?

Two new positions opened up for assistant supervisors at my job. I’ve thought about going for it. I’m submitting an application. Others are saying I’m great for the job or I’m perfect for it with my experience. I’ve been having second thoughts. Maybe I’m afraid of the risk for the outcome if I fail.

Why do others seem more confident in my abilities than I am in myself?
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