Cobbler, stick to your trade.

Cobbler, stick to your trade.

proverb Do what you are familiar with, experienced in, or skilled at; don't attempt, interfere with, or give advice about something you are unfamiliar with. After his failed attempts at writing books and hosting a television show, many think the aging DJ should retire or return to radio. Cobbler, stick to your trade. Look, I know you are trying to help, but you don't actually know the first thing about computers. Cobbler, stick to your trade.
See also: stick, to
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