Lots of the skills that I gained from music have nothing to do with music. Being a part of band programs and taking private lessons shaped me into a considerate human being in ways that extend far beyond the rehearsal room.
I learned that you show up on time at the very latest. Arriving late shows your colleagues that you don't respect their time and that you didn't plan ahead well enough to get there when you said you would.
I learned to be prepared. If you review ahead of time what things you have to bring to school/work/rehearsal, you will always have what you need. You will never be caught unprepared.
I learned to take good care of my stuff. Instruments and sheet music are expensive and sometimes impossible to replace, so I quickly learned to keep track of my things and treat them with care.
I learned to show leaders respect, even if I don't always agree with them. Conductors have a specific vision for the pieces they program for their ensembles, and a band or orchestra can only function if everyone cedes to the conductor's ideas. You're allowed to think whatever you want to think, but unless you're in charge, you won't always get your way.
...but I also learned to choose carefully who I follow. If someone with authority over you, whether it's a boss, teacher, or conductor, asks you to do something you see as morally or fundamentally wrong, it's time to get out of that situation. If you have a choice, choose to follow compassionate leaders.
I learned that it's important to have something in your life that you control. If you chafe against large ensembles, start a chamber group or a solo project. If you don't like your office job, find a different one or work from home. Pick up a hobby that you enjoy, join a gym, or take a class in something you want to learn. You need to have something in your life that you have ownership of; this makes the times when you have to follow the leader more tolerable.
Share what music has taught you in the comments!