i assume you're not trapped in a cage-like environment staring at a screen for 8 hours constantly receiving messages while feeling observed and judged. it's a big difference just occasionally receiving a mail and some of them can be unpleasant.
Why would you assume that? "Professional musician" covers an incredibly wide range of experiences but large swathes of that easily fall into solo entrepreneur. Even among professionals very very few musicians are practicing or performing for the majority of their working time.