I'm six years in Japan. I think staying in touch with your home country makes a big difference. I'm yet to move back for good, but I find that two things have made my readjustment when visiting home much easier:

  1. Keeping up with family via Facebook
  2. Getting an AFL streaming subscription

If you're not Australian it's hard to understand, but once you've experienced the greatest sport in the world it's hard to give it up.