I guess I could have reworded my rewording better. My multiple experiences with burnout were preceded by boredom, but I guess my burnout isn't the same as your burnout, or others' burnout. I define burnout as just not giving a f*ck anymore, not caring if the project succeeds or fails, or if I get fired. I don't know what others' burnout is like.
I had only one episode, it lasted 18 months of complete inability to perform my job (that I was perfectly capable doing before). Full recovery took several years. It was like a firecracker went off in your head and left a buzz that prevents you to stick to your task even for a second - except there's no actual buzzing sound.
The trajectory that took me there was acutely unpleasant but I would not describe any of it as boredom. You ain't getting bored on your death march.
Can't imagine several such experiences, I'd rather change career.
