What separates those who choose to stay married from those who don’t is attitude. Your attitude is the single most important determiner of your success in life, be it a job or a relationship. Life will throw you a thousand curve balls. So will marriage. But it isn’t the curve balls that matter—it’s what you do with those curve balls. And what you do stems from how you think.
... That may sound counterintuitive, but it follows the same logic as that put forth by Martha Washington: “The greater part of our misery or circumstances depends on our dispositions and not on our circumstances.” It’s what Abraham Lincoln noted: “People are about as happy as they make up their minds to be.”
...Mentally Remove the Option to Divorce ... Technically, divorce is an option. The trick is to pretend it isn’t. “The very option of being allowed to change our minds seems to increase the chances we will change our minds.
... Avoid the Green Grass Syndrome ... Constantly asking yourself whether your spouse is right for you, or whether you’d be better off with someone else, is disruptive to your marriage.