Athens, send them lots of pictures! They'll see how happy you are and that you're experiencing new things, etc.
Also, it will get naturally better with time. I first started spending long periods away from my family when I went to college and for the most part have lived pretty far away from them ever since. The first six-month stretch I spent away from them seemed to last forever, but over time we both grew accustomed to it and I also got better at making the most of the quality time I do get when I visit them, sending them occasional surprise letters or care packages from my city, etc.