I have a confession to make (and it's not one I willingly like to admit): I am flawed when it comes to verbalizing what I'm thankful for. Just as I've done with any form of exercise or being better about calling my grandparents, I've been neglecting it on a regular basis. And it's time to change that.
One explanation could be that we automatically default to the negative. According to Rick Hanson, neuropsychologist and author of Hardwiring Happiness: The New Brain Science Of Contentment, Calm and Confidence, our brains have a natural negativity bias and we have to train them to focus on the good.