On our Resources page you'll find an app called Happier. For awhile the app had courses you could purchase. They still have some you have to pay for, but many of them are now free.
One free 10 day challenge (course) is called Attitude: Gratitude. The topics are as follows:
What Makes You Happier
The One Thing Happiest People Have in Common
Savor the Sweet Things
Creating Your Daily Gratitude Ritual
How to TurboCharge Your Gratitude Ritual
The Little Huge Things to Appreciate in Every Single Day
The Gratitude of Anticipation
10 Ways to Be Kind to Someone Today
The Awesome Power of a Gratitude Reset
A Gratitude Reminder to Your Future Self
While much of what we do in counseling seems to be about moving people from more impaired, more depressed, more anxious to less impaired, depressed or anxious, you might find that focusing on gratitude is an excellent adjunct to your current treatment program.