If music's your passion, see if you can find something in that? As others have said, recording/production, teaching, whatever you enjoy. What about sales & marketing with a record label? It could combine your sales background with your love for music.
The one thing my parents always stressed growing up, was to be happy in whatever you do. They've both been successful in their lives; my mom loves her work, my dad is miserable. There's plenty of money out there to be made. Why not find an enjoyable way of making it.