You can be depressed without realizing it. Part of you can think that you like your job, while another part of you hates it. The best way to detect burnout isn't to ask "do you feel burned out?" but to ask "can you get the work done?"
I was stuck in the code mines a few years ago; I'd always find some way to convince myself I was happy about what I was doing, but then I read this blog about SEO and started dreaming about making my own web sites that make money...
At that point my mental health really cracked and I couldn't focus on 9-to-5 work at all anymore. It was a sign that I had to change what I did, and gradually, that's what happened.
I was stuck in the code mines a few years ago; I'd always find some way to convince myself I was happy about what I was doing, but then I read this blog about SEO and started dreaming about making my own web sites that make money...
At that point my mental health really cracked and I couldn't focus on 9-to-5 work at all anymore. It was a sign that I had to change what I did, and gradually, that's what happened.