I have a meaningless job that pays my bills, lets me invest and save for my 401k. I should be happy but I'm not.

I should be more ambitious but I don't have any motivation to find something better in my current field, nursing. No matter where I work with my degree in nursing, it's going to be the same shit wherever I go: stupid, entitled people, both coworkers, doctors and patients, drug addicts, people with dementia, cancer, drunks, infuriating relatives who believe I'm their waiter, people with minimal complains who believe they're more important than the possible heart attack next to them, the coworker who won't shut up talking about her children...

I know no matter where I work there are always curious characters you simply have to pretend to like but I find it so tiring faking interest in their crap (coworkers I mean). It could be even worse because my actual manager is not much of an asshole.

I always wanted to study literature and write novels, which I still like and do, but there is not much money there. As much as I hate my current job, it pays the bills.

But I still feel stagnated.

One doctor suggested me to enroll in a nursing master to get better job options but I'm simply not motivated.

This doctor doesn't seem to understand that what I need if I go this route are mentors, because the master will only teach me theory on paper, not the practical experience I'm going to need and my hospital is not a good teaching hospital: people claim they'll help you but as soon as management leaves, they ignore you.

I don't know if I have unrealistic expectations.

I also feel like a coward sometimes because I don't want to lose a mediocre position with financial stability for a passion that might not earn me a living.

At the same time, the best opportunities usually require you to go outside your comfort zone.

I don't know what to do.