best marriage advice?

What’s your best marriage advice? 

What’s the “secret” to a long and happy marriage? 

Tell me both what you’ve heard and what you live by, what you know to be true. 

I have a great marriage, but it hasn’t always been this way. The “secret” for our happy marriage is in my confidence and the security that he will always be there. He tells me he loves me, and he wants me, just as I am… and I choose to believe him.