Based on just a few factors, psychologist John Gottman can predict with up to 94 percent certainty whether a marriage will succeed or fail. Changing your mindset and behavior in a few ways changes everything.
I read this fascinating and concise article a couple of years ago and reading it again has been a good exercise for me.
"He invited 130 newlywed couples to spend the day at this retreat and watched them as they did what couples normally do on vacation: cook, clean, listen to music, eat, chat, and hang out. And Gottman made a critical discovery in this study—one that gets at the heart of why some relationships thrive while others languish."
The Masters of Love