Listen to real or virtual rain: Sit near a window during actual rain, or play a looping rain soundscape track. 

Isolate one surface text: Listen past the general 'hiss' of rain and isolate the specific sound of water hitting one surface (e.g., leaves vs. metal sill). 

Track that single texture: Keep your auditory focus locked on just that single texture for 30 seconds. 

Switch to a new texture: Shift your ears to track a different layer, like individual splashes hitting a puddle on the ground. 

Surrender to the rhythm: Let the natural, chaotic rhythm of the drops slow your heart rate down. 

End with a deep exhale: Take a slow breath in, exhale the sounds, and open your eyes.