I rely on music for emotional regulation. Not only does it help push me towards moods/states i want, like focus, energy, calm, etc - but it helps me manage moods i don't want. If i'm feeling sad, embracing the sadness with music can be enriching in a unique way. Almost like "having a good cry", but far easier to achieve, and with application for almost all moods and circumstances.
Music really is the center of my life, even though i don't play it. .. though i do dabble, and am currently learning Piano, so /shrug.