Taking a sabbatical. I was burnt out from working, and I was getting that "unfulfilled" feeling, feeling a little lost. I took a 2 month "trial" sabbatical, then quit my job for good after coming back for a few months. That was a few years ago and I'm now on my second sabbatical. I'm poorer financially of course, but much richer personally, having a more positive outlook on life, and most importantly much, much happier.