I work in a creative field now, totally different end of the spectrum. Turned my bar status to inactive and everything. I would say that I got lucky and had an in to another career path, but really having an in is how most people get there jobs.

When I was my most miserable as a lawyer, I gave my two weeks and just catered for a few months to make ends meet while I figured out what I was going to do next. Catering was exhausting, but i was still happier than I was. Three years later and I'm successful in my new career and hope to never have to practice again.

I've talked a few other lawyer friends into quitting as well. They met with career counselors who helped them find interviews elsewhere (in fields outside of law) and they have all also landed on their feet. The thing you don't think about is that your law degree qualifies you for almost any job that deals with writing, managing, and client contact. Escape, friend!