Don't worry about a thing

Meaning

A highly comforting promise that the speaker will take care of the situation, relieving the listener of their burden. It is the verbal equivalent of a warm hug.

Affectionate, reassuring

Used in a sentence

• I will handle the catering for the party, so don't worry about a thing.
• You just rest your feet and don't worry about a thing while I fix dinner.
• I've got the kids covered this weekend, so don't worry about a thing.