If you were to write up the "Rules of a Healthy Friendship", what would they be? These are mine.
Stay in touch
This is probably the most obvious, and also the most difficult rule of friendship. Staying in touch, despite everything else that is going on in life. We can go for weeks, even months, forgetting to phone a friend, especially in the age of twitter, texting, and facebook.
Think about it...when was the last time you actually spoke on the phone to your friend that lives in another city?
Also very difficult is the act of just listening when a friend needs to talk. I'm the first to admit that I'm guilty of handing out unsolicited advice, but sometimes our friends don't want advice - they just want to vent. If they do want advice, always be honest, even if its not the advice they want to hear.
Make plans together
While this may also seem obvious, its hard to do when you consider all the responsibilities and obligations in your life. Has it been a while since a friend asked you to do something? Maybe its your turn to ask them.
Maintaining a friendship requires a lot of effort from both sides. So make sure you are holding up your end of the bargain....or friendship, in this case.