When someone advises you to "don't concern yourself", they may mean that you should not worry or bother yourself with a particular matter. There are many similar phrases that convey the same message, including "don't stress about it," "don't sweat the small stuff," "don't fret," "don't be bothered," "don't pay it any mind," "don't give it a second thought," and "don't lose any sleep over it." These phrases are meant to reassure and calm someone who may be feeling anxious or overwhelmed, and can help to redirect their attention to more positive thoughts and actions.
