(...) I also believe that most crabby people can change by making a conscious choice to react to the world in a different way. The key is to scan your environment regularly for things and people to appreciate rather than to criticize. In so doing, you create a new climate of praise and gratitude in your life. Instead of getting bogged down in people’s faults and mistakes, you get swept up in a fruitful search for reasons to say “thank you.
— John M. Gottman The Relationship Cure: A 5 Step Guide to Strengthening Your Marriage