Top Five Keys to a Successful Marriage

Here is a pretty open ended post - what are the top five keys, in your humble opinion, that would lead to a successful marriage?

I will start the ball rolling with my five: not in any special order...

1. Communication - regular communication
2. Learning your partner's love language
3. Team work/Partnership - developing an us against all odds mindset
4. Learning to disagree without being disagreeable
5. Common Goals

OK - what are some of your ideas? Of course I left out a common faith - duh - so important.