I sat at a wedding recently and excitedly listened to my father-in-law who promised to give the secret to a long and happy marriage. More than 50 years of marital bliss had made him an expert on the subject and the perfect candidate for this speech. His advice was profound yet so simplistic that most every school could understand. His solution to problems was a simple and heartfelt, "I am sorry" to your partner whenever needed. With this advice h...