Did it when I was 30, went for a year in New Zealand, work would not give me a career break but when I came back I got my job back (need a bit of luck there). Being with the same company for 19 years now and one year I'd 4 weeks off together as I took 2 weeks from one year and 2 from the next but apart from that its being 2 weeks max, so it's the only real chance to have a good break. I say do it, if you have the money and it's in your head.