How might we create a timer that encourages healthy habits while limiting time spent on a given task?

My process began with figuring out my use cases. I initially wanted to create a timer that could be used to limit water usage so I decided to surround my concept around limited shower times. I wanted to combine my shower timer with music as I feel most people enjoy listening to music while they shower. As I progressed further into the project I ran into some conceptual problems, so I decided to switch gears and focus on a timer that utilized Spotify and Apple Music to create playlists based off of how long you set the timer.