In casual conversation, one is often told to "Grow up!", ie be more mature and more like an adult. What would be the most accurate phrase to express the opposite sentiment - you need to loosen up, embrace your inner child, appreciate the fun in activities usually seen as frivolous, etc?
- "Grow down" is humorous but I'm not sure if it's correct, and it's definitely not widely used.
- "Loosen up" works but doesn't have quite the same "child-like" connotation.
- "Relax", "chill" and other such common words also fall in the same category, but don't express a need for childishness.