Those are some good ones. The part about communication is very important. I think the most arguments my wife and I have these days are because one of us assumes the other knows what we are thinking or planning. While that may hold true for some things, even after 15 years it isn't a given. It's always a good idea to put things in words just to be sure you are on the same page. I still struggle at it sometimes. I think my two biggest things would be take your time and don't settle. What you want at 18 is probably quite different than what you want in your late 20's and you need to give yourself room to grow into that. I also think many times we settle for what is available without realizing the world has so much more to offer us.