<human>: I don't reddit much so please let me know if I'm doing it wrong and if I should add more information.

Exactly as the title says. I've been with my fiance for 3 years, engaged for 6 months. We moved in together when we got engaged and spend most of our time together. 

We're both in very demanding fields and the stress level is high. We both have to take work home with us. I can tolerate the stress pretty well, but he has been struggling with both the workload and the high expectations of the job. We both also have student loans from undergrad, with his being a little bit higher, so he is not willing to switch fields due to how much longer and how much more money it would take to retrain. It's a very specialized field so it would be hard to transition to any equally (or slightly lower) paying job. 

He's really taking any flaws in his work personally and hates his job. He's also lashing out at every little thing and often angry, which is often a manifestation of depression in men. That and his talk about how little he wants to live and several other signs makes me think that he has depression. I've urged him to go see a therapist, if not a psychiatrist (since he doesn't want to take meds), but he's refused by saying that therapy doesn't work on him. His view is that therapy doesn't work unless you believe that it can and he also doesn't want to put in the mental effort. 

I'm pretty exhausted from constantly having to sympathize and calm him down. I'm a well-adjusted person, but even I have limits to how much extra emotional weight I'm willing to take on. Is there anything that you guys have found to work with someone who is adamantly refusing to go to therapy? Giving him an ultimatum wouldn't work because he'd just say it's another sign that he's worthless and that I'd be better off without him anyways. Any input would be appreciated.

Condense the text into a few key points
<bot>: My fiance definitely has self-esteem problems, probably also depression, but refuses to seek treatment of any sort. Do I just give up at this point and is there some other strategy that I don't know about?