I always feel stupid giving advice since I've been married, what, a year? I can say this: Be in it for the long haul and just know there are going to be rough patches. No two people are the same, there are going to be areas where you just don't click.
The older you get, the more you realize that the way you look is a reflection of how you treat yourself.
Despite all the technical improvements, it still boils down to a man or a woman and a microphone, playing music, sharing stories, talking about issues - communicating with an audience.