I've been involved in a long distance relationship since... August? I know women are supposed to remember all the details like that but *shrug*
As everyone else said, communication is key. We talk just about every single day. Sometimes it's just a quick hello and others it's for hours at a time. On days when we don't get a chance to talk I still let him know what I'm doing and that I'm thinking of him. He doesn't give me tasks to do, it's just not something important to us.