There's a fairly thin line between burn out and depression. It depends, as ever. If you can find the motivation to do other stuff, not related to work, and do

There's a fairly thin line between burn out and depression. It depends, as ever. If you can find the motivation to do other stuff, not related to work, and don't felt generally "sad", it's more likely to be burnout. But the other symptoms that you've listed are pretty indicative of depression. (I over generalise on purpose with "feeling sad"; depression is way more than that.) I was burnt out in 2009/10. I was avoiding work, making mistakes, literally hiding things from my boss at the time, and simultaneously shutting out my then wife, drinking a lot. I'd take walks out during the day, two hour lunches, because I didn't want to be in the office, once I even hid my blackberry in a cupboard. I was interested in other things (I was writing, and reading lots, in preparation for the the PhD that I wanted to do), but anything to do with actual work: no thanks. Having been depressed before, I could tell it wasn't that, and it took me a long time to work it out - long enough to encompass a divorce, nearly getting fired and getting forcibly transferred out of that job. If you're worried you might be burnt out, then you might be burnt out. But you also might just hate your job. Edit: I'm now doing that PhD, started one company that tanked, working at another startup, and learned to code in the last year so I could build another, different one. Burnout fades when you take yourself out of the situation, but sometimes that's easier said than done. The first part is realising what's happening.