Those of you who have been married a long time, what's your secret?
I can't remember where I heard this, but early in our marriage I was told that when your in the middle of an argument, think about whether you'll be happy you "defended your position" when you wake up in the morning and you'll probably back away from a lot of silly fights.
It has definitely been true for me.
It also helps that I found the most wonderful woman in the world!