Many years ago, I started a habit of writing regular gratitude letters to people who helped me, changed my perspective, or did something nice for me or my family. I even started writing letters to mentors from my past, authors of books that I admired, directors of movies I liked, musicians whose music I enjoyed.

To this day, I continue to write gratitude letters for the following reasons:

1. Gratitude letters force us to feel grateful. That’s important because gratitude is the the number one way to increase our happiness, satisfaction, and fulfillment in life. It’s science, no joke.
2. Gratitude letters spread joy. When people feel good about themselves, they are nicer to others and feel better about themselves. So if you want to make the world a better place for yourself and others, gratitude letters are an easy way to spread joy and increase kindness.
3. Gratitude letters force you to write in different ways. I’ve written books, long-form articles, business reports, blogs, video scripts, and everything in between. But to this day, gratitude letters are some of the most challenging things for me to write, simply because they demand genuine thoughts and feelings. This makes me a better writer I believe.

Don’t know where to start? Consider this approach: “Close your eyes and think of someone who did something important for you that changed your life in a good direction but who you never properly thanked. It could be that you’re really grateful to a teacher who inspired your love of acting and who persuaded you to try for drama school when everyone else was dead set against it. Maybe you’d like to thank your boss or a colleague for helping you with a particularly tricky project at work. Or perhaps you choose to write a friend who helped you through a tough time… Describe specifically what they did and what influence it had on you. Let them know what you are doing now, and mention how you often remember what she did.”

Although I’d say a large portion of my gratitude letters go unanswered, that’s not why I write them. But it’s a sweet experience when I do get an answer. One famous writer wrote me eight months later saying he kept my email at the top of his inbox to remind himself that he was a good writer. Another director from Los Angeles wrote back and invited me to lunch the next time I was in town. The college professor that inspired me to become a writer replied saying he had no idea and that my email was a good reminder to him that we never know how our efforts touch the lives of others.

Moral of the story: people are amazing and writing gratitude letters is good for everyone.