If you’re really thirsty and you’re given a glass that’s not brimming over with water to quench that thirst, what’s your reaction? Well, if you’re a person who sees that glass as being “half full,” you’ve been practicing gratitude. One writer for the American Heart Association has described this outlook well: “Gratitude is a thankful appreciation for what an individual receives, whether tangible or intangible.” If you’re still focusing on the water that wasn’t there and a little peeved about that, you may be in some negative habits of mind that can have some unfortunate health effects. Don’t worry – at the end of this article you’ll find some options that can help you cultivate a grateful outlook.