Yossarian decided to change the subject. "Now you're changing the subject." he pointed out diplomatically. "I'll bet I can name two things to be miserable about for every one you can name to be thankful for.
You should be thankful that dark colors suit you. Not everyone wears black well." "Why, Lady Olivia, is that a compliment?" "Not so much as a compliment to you as an insult to everyone else," she assured him. "Thanks heaven for that. I don't think I would know how to conduct myself in a world in which you offered compliments.
If you hate the war, that’s fine. But you should still support the troops. They don’t get to pick where they’re deployed. They just gave the American people a blank check for anything up to and including the value of their lives, and the least everyone else can do is be thankful. Buy them dinner. Mow their yard. Bake them cookies.
To educate yourself for the feeling of gratitude means to take nothing for granted, but to always seek out and value the kindness that stands behind the action. Nothing that is done for you is a matter of course. Everything originates in a will for the good, which is directed at you. Train yourself never to put off the word or action for the expression of gratitude.