Have you ever changed academy, moved home, left one job for another and realised that by doing so you are starting again and leaving all your friends behind? Going down to university, getting divorced, moving on are frequently exciting times but can be full of alarm nevertheless. 

The beauty of friendship is that it isn't at each necessary to do any conservation work for keeping it up which means you need not visit your friends or call your friends or write/ communication to your friends at regular intervals to show that you're still friends.