About to Leave Cambodia

In less than a week time, I will be leaving my beloved Cambodia for the US to pursue the Master Degree at the University of Arizona. The degree to be due is Urban Planning which has been my dream. However, I feel that I have not yet prepared everything for my entire two years in the State yet. I was so delighted at first when I got admitted into the university, yet as time moves closer to my departure date I feel I do not want to leave.