Work is work, any expectation that it will make your life complete is unrealistic. If it does anything over and above paying the bills you're in gravy.
That said, boredom and depression are entirely reasonable and natural reactions to some work environments.
It's worth having a think about what what you like doing and how that led you into your current job.
If you find the same things interesting but those things are lacking in your job then backtrack a bit and try to find a job where those things are present.
If fundamentally you've changed interests then your options are retrain or htfu.
...But you know that already.
My entirely personal experience is that all education is satisfying long term, work not so much. The notion of a career doesn't actually survive contact with the workplace, and most sane professionals are not happy with work (how could they be).
My current solution is to work freelance and so can disguise the fact that I only work half the year and idle around the rest of it with my family; guess which half of the year makes me happy.
Work is work, any expectation that it will make your life complete is unrealistic. If it does anything over and above paying the bills you're in gravy.
That said, boredom and depression are entirely reasonable and natural reactions to some work environments.
It's worth having a think about what what you like doing and how that led you into your current job.
If you find the same things interesting but those things are lacking in your job then backtrack a bit and try to find a job where those things are present.
If fundamentally you've changed interests then your options are retrain or htfu.
...But you know that already.
My entirely personal experience is that all education is satisfying long term, work not so much. The notion of a career doesn't actually survive contact with the workplace, and most sane professionals are not happy with work (how could they be).
My current solution is to work freelance and so can disguise the fact that I only work half the year and idle around the rest of it with my family; guess which half of the year makes me happy.
Your mileage will vary and thats part of the fun.