It could just be that you don't want the job you have anymore – and that is often good! You get to find a job you do want and your employer gets to find somebody who wants to do your job more than you do.
And all this to make more bucks for some rich arses.
I mean, was it all computer stuff or did you change it up with ditchdigging?
I actually did it once ~15 years ago. Left software due to burn out and took a 50% paycut. All my stress disappeared. White collar non sales jobs are pretty easy coming from a software background if you have some complementary people skills. The complexity is much lower so it's easier to shine. Was great for a few years then decided to have kids so I needed more $ and went back to software. The stress had just been waiting for me the whole time :)
I'm currently going though something close to a burn out, things like making coffee can make me cry. Haven't slept more than 3 hours in a month and can barely form a coherent sentence half the time. But hey, at least now i know i need to find a new job! Sure that is gonna go great.
You get to find a job you do want and your employer gets to find somebody who wants to do your job more than you do.
As if the root problem is that you just don't want to really do your job. (As opposed to the far more likely: you absolutely did when you started out -- until the employer started getting in the way. And telling you to take more yoga classes as a way of coping).
You can be the thing that changed as well.
Fortunately, however -- once you have enough observational data with these things (so as to be able to make a balanced assessment about them) -- it becomes perfectly reasonable to come to the conclusion that "It isn't me, it's them."
Cause you know, sometimes it just is.
That is completely missing the point of what burnout actually is. Some people take years to recover - good luck starting a new job.
Dissatisfaction with the current job is a signal to go somewhere else. Being on the verge of completely stopping to function as a human being is necessarily bad.
It could be that the job was just too dangerous and difficult for you. You will be removed from the jobsite, and maybe that is what you wanted all along. Someone else that wants to have a job can take the one you left. And your employer gets a benefit from getting a fresh, uninjured person.