This might sound bad, but listen until the end. That's ok if you feeling down when one of people that made you happy with their work left, even if the departure was on the bad note, but it's ok. Main thing now is to get your mind out of this thoughts. You need to take a break for some time. You need give a break to your brain by putting muscles into work or just take a break. And also Who will be a "enemy" for FNIA Studio if it's not you.
But all in all, get some break.