I wanna trow a basic idea out there for an app that I believe to have a simple architecture.
The app encourages to journal on your current mood, happy, sad, excited, angry, frustrated, delighted, anxious, liberated …
At the completion of sharing you have the option to send this writing to a random (customizable) user of the app that agreed upon reading an entry on that day or during this week. There are a lot of ideas surrounding the modalities of this sharing.
The power of this being the knowing that someone out there is receiving your sharing without the expectation of reactivity.
The mood journal will also stay available in your private chain to get an orientation in your mood over time.
A second layer could be a tracking of values.