Not sure where to start with this one, except to say that I genuinely wish you success in figuring things out, Edward. I'm right there with you!
I don't have an answer to your question - about finding more inner peace, well-being, and less stress from a career change. But I can soooo relate and I figured I'd share, since it helps to get things out there.
I'll spare you the details, but in a nutshell, I am absolutely, positively MISERABLE in my current job. In fact, I've hated just about every job I've ever had. And I've done a lot of soul searching to try and figure out if it's actually the jobs that are the problem, or is it ME? And you know what? It's the jobs. Can I try to cultivate a better outlook? Yes. Can I learn to meditate, try relaxing breathing techniques, neurolinguistic programming, or whatever it's called? Yes. But I'm pretty sure I'd rather just have a job that doesn't make me need meditation and calming breaths, know what I mean? ;-)
The good news is, I'm not just sitting on my laurels waiting for the universe to drop a better job in my lap. (Although that would be nice, and some days, the pace of change is so slow that it can feel like all I'm doing is waiting for my fairy godmother to come rescue me.) I'm 2 months away from a master's in nutrition and hopefully a drastic (if gradual) career change. I'd like to quit the day I graduate and then have 30 clients a week lined up at my door, but somehow I don't think it's gonna happen quite that quickly.
My current job is, in every conceivable way, dead wrong for me. I happen to be good at it, but that doesn't mean I give a flying hang about it, y'know? I'm stressed out and tense, but not because of deadlines or pressure. In that sense, my job's actually not stressful at all. I'm very much a low man (woman?) on the totem pole with no major responsibilities beyond my daily mindless tasks. What makes me nuts is the sheer misery. Some days it's total apathy - a complete flatline. You'd need a cattle prod to get me excited about anything. Other days it's barely controlled fury/anger/impatience with coworkers, bureaucracy, and endless paperwork solely for "CYA" purposes. But the bottom line is, is the whole system broken? Yes. But the person I'm angriest at is myself. Because I've been there for two and a half years and I knew from the second day that it was dead wrong for me. And I've stayed out of FEAR. Fear of the unknown, fear of having to move back in with my parents at the age of 33, fear of flying by the seat of my pants and landing on my feet, which seems to work for plenty of other people but absolutely terrifies me. (And fear of Suze Orman's voice in my head going on about my IRA...)
In terms of Paleo diet and stress/career, all I can say is, all things considered, I'm doing pretty darn good. I don't even want to think of how I'd be faring if I were still eating the SAD and doing chronic cardio. I'd probably have gained an astounding amount of weight and I'd be lucky if my adrenal function wasn't a distant memory. I fully credit my diet for the stamina I do have and the fact that I'm still kickin' and able to get up and face the world every day. (And sometimes I imagine how amazing I'd look and feel if I was eating the way I am and had even a modicum of fulfillment in my work. I very much hope to one day experience how it feels when "all the pieces come together," although I suspect there's a chance they never will. (Can I find enjoyment and satisfaction in things outside work? Of course. But the full-time job and school have put a crimp in spare time for volunteering, joining a club, etc...for now.)
And it's rough, because even though every now and then I do turn to food or wine for a little comfort, for the most part, I stay away. So when I'm super worked up and aggravated, or really down in the dumps, I don't do what most "normal" people do -- medicate myself with a donut, or Chinese food, or what-have-you. I don't have the money for retail therapy, so I can't drown my feelings in shiny new toys or fancy clothes. I can't go home and jump into a pint of ice cream. My coping mechanisms are now a loooong walk outside or my favorite shows on Food Network. Honestly...I wonder how much more workplace violence there would be if you took away the sugar and coffee! (Not that I have anything against coffee.) They're the go-to pick-me-ups for most people in an office environment, no? If not for my diet, I don't doubt that I would benefit from medication. (But again...I don't want to be medicated in order to tolerate a cr@p job; I want a new job!)
Switching to a Paleo/primal way of eating didn't bring out the unhappiness in my situation. Identifying more and more lifestyle factors I believe in, redefining my core values, and seeing how utterly incongruous my current daily routine is with those is what did.
Edward, seriously, good luck to you. You're not alone. I think many people feel "trapped" in jobs they don't like. (Or cities, situations...) The scary part is doing something about it. But we need to. Life is better than this! It (and we!) have more to offer than this, and forgive me for being cheesy and metaphysical here, but the universe deserves better from us.
"Don't ask yourself what the world needs. Ask yourself what makes you come alive and then go do that. Because what the world needs is people who have come alive."
"A ship in the harbor is safe. But that's not what ships are built for."
(Kudos to anyone who made it this far! And thanks...)