This is a quote that Facebook assigned to me twice as a personal statement, so it must be true. Actually, I do believe that it describes my life philosophy quite well!
Gratitude is one of the most important ingredients in joy, if not THE most important; at least that's what current psychological research is discovering. The other ingredients are acceptance, compassion, meaning, and forgiveness.
Gratitude can become a habit. Just focus on things for which you are grateful, several times a day, for perhaps 10 seconds at a time. With regular practice, your mind will eventually learn to feel gratitude all on its own. That's it!
Go ahead. Give it a shot!