Optimism: A Gratitude Journal is a lifestyle app available on the iPhone platform. The program aims to rewire your brain for increased positivity through a simple yet impactful exercise. Inspired by a study conducted by Robert A. Emmons and Michael McCullough, participants reported improvements in their quality of life, relationships, and sleep by practicing gratitude.

The core exercise of the app involves jotting down three positive moments every evening. This practice is designed to help users cultivate a habit of gratitude and reflection. The app encourages users to try this exercise for a week and then make an informed decision about continuing this beneficial practice.