Do you concentrate so much while working that you forget to breath deeply? This application will breath with you and will help you to maintain a constant breath rate. It creates a nice looking overlay on your screen which reminds you to breath deeply and not to hold your breath. Adjust breath rate and overlay properties to your needs and breath with the application.
If you use Qt framework you already know what to do. Otherwise feel free to open an issue with a request to create a distribution package.