I seem to have lost control of myself

I seem to have completely lost control of my temper and any little thing is causing me to meltdown, thankfully I'm not a hitter, I'm just a yeller, I go from 0-100 in 3 seconds, it happens so fast now that I can't stop it, count, breath, walk away, nothing, I just have to let it out and I'm mean. My wife bears the brunt of it and I feel so bad and so justified at the same time, she's no saint either but I seem to have lost any control and most of my filter.

I believe that I'm experiencing severe burnout, I've been pushing myself for years, this engine ran on willpower and anxiety, until my body started to give out and I hit a wall, now it's chronic pain and anger, so much anger, I'm always sick or not feeling well in some way, it just goes on and on and everyday that passes I hate everything more and more, to the point where I start questioning existence itself.

I can't seem to get along with anyone anymore and I don't know what to do