If you're happy where you're going you'll be amazed at how quickly you can adapt to life there.
Think of it this way....you're not only moving away from family and friends you're also moving away from everybody that annoys the crap out of you, and everybody that brings up bad memories, and every part of town that's got that weird smell. and that restaurant everybody always wants to go to that you hate. You're going to a new place, you get to start over from scratch.
Unless, of course, you go visit and Mike smells like pickles and gives you a wedgie. In that case you should probably stay home.