Ever felt like everyone else's world is moving at 100mph while yours is standing still? I have. Still do, in fact; have felt it for quite some time now.
I guess that happens when big things change in your life. You watch the people you used to know, doing what you used to do, and continuing to do those things while you have it all on pause. You wait for a time when you'll be able to catch up and carry on as before.
Of course, it doesn't really happen. You get a moment to catch up, but it's never long enough to have caught up with everything everyone else was doing in your absence. It's sad, because obviously you end up losing touch with people/activities you used to spend a lot of time on. It's not easy from the other side either - I distinctively remember the feeling of losing friends when things started happening for other people and they weren't around as much, or started having different interests as a result of their new lives.
It's an odd feeling. I'm not sure I like it.
(I don't deal with change too well. Can you tell? :P )