Sleep meditation tones for happiness when you want a calm half hour to shake off the day and feel good. This gentle sleep meditation is built around soft, steady tones and runs for 30 minutes. Dim the lights, set the volume low and press play when you want a cosy, feel-good wind-down at the end of the day or before bed. Pair it with a warm drink or a few slow breaths for an easy, happy end to the evening. (A relaxation aid, not a medical treatment.)