let it all out

Let it all out is an encouragement to release pent-up emotions, typically through crying, venting, or speaking freely about what's troubling you.

It suggests that holding back feelings is unhealthy and that full expression brings relief.

The phrase often appears in consoling contexts: Go ahead and cry—let it all out.

It can also apply to creative or physical release, as when a singer belts out a song or someone screams in frustration.