What is the key to a lasting happy marriage?

Love..excitment..lust

Why do we always put it on the other person to make/keep us happy? Ultimately it's up to yourself to keep you happy. It's in no way your partners responsibility. If you can't make yourself happy, how do you expect someone else to make you happy? They don't insight into your head, they don't know your every thought...and when you don't let them in it makes it that much more difficult to even attempt to make you happy.
Your happiness is in your hands

Does no one get that a marriage takes work?!
Who you were when you met is not always you will be down the road. You have to grow together. Why does it seem no one is willing to fight for their marriage? ...Where does the passion go? Where does any of it go?