Definition & Meaning of "[let] the grass grow under {one's} feet"

What is the origin of the idiom "let the grass grow under one's feet" and when to use it?

The origin of the idiom "let the grass grow under one's feet" is rooted in agricultural imagery. In agricultural settings, when someone allows the grass to grow under their feet, it implies they are standing still for an extended period, not being productive or making progress. It is often employed in personal, professional, or motivational settings where there is a need to emphasize the importance of taking action and making progress.