Leaving -3 days

Leaving for a foreign country in less than 3 days I finally decided to start packing. Many of us have taken weekend jaunts to Grandma's, or a few weeks vacation, but how does one pack a years worth of supplies and clothes into 2 suitcases that must be less than 50 lbs? What does one take to a country they have never been too, a country they know little about, a country so unlike the one they currently live in?