security blanket

The phrase "security blanket" refers to an object, person, or situation that brings a sense of comfort, safety, and reassurance to an individual, especially in times of distress or anxiety. It is often used metaphorically to describe something or someone that provides psychological support or a feeling of protection, similar to a literal blanket that offers warmth and security. The term originates from the idea of a blanket that children often carry with them for emotional support and to alleviate fear or insecurity.