I've seen this posted many times in the past few days. I usually don't see the appeal of reading things similar to this one. However, it's beautifully written and it shows the insights of a man who truly tried to look back and see what he could do differently AND better the next time. I think it applies to both men and women.
http://geraldrogers.com/marriage-advice-i-wish-i-would-have-had/