I have learned over the last decade that one of the keys to a happy marriage is paying attention to the small and simple things (in fact I almost chose that as the name of this website). Here's one example from my life. I try to be a gentleman; I do not believe that chivalry is dead. Despite the fact that many people believe that women are equal to men I wholeheartedly disagree. Women are SO much better than men. I have no doubt that my wife is better than me. That is why it is my goal to make sure she remembers that no one else could worship her like I do. So, I pay attention to the small things: I open doors for her (she even gets in trouble when she doesn't let me), I tell her that I love her at nearly every opportunity, if she's cold I offer to let her wear my jacket or coat, I proudly introduce my wife to the people that we run into that I know and she does not, and I fiercely protect her good name. No one is allowed to speak ill of my wife in my presence. She is amazing.
Small and simple things. That's what it is all about. If you don't already to do it men, be a gentleman and open the door for your wife. She'll be pleasantly surprised and you'll find it rewarding. Treat her like a queen and she won't throw you back into the pond. Remember, she's better than you so it's your job to give her a reason (or better yet many reasons) to keep you.