Using a devices that tracks how many hours I sleep and plots nice graphs was a nice way to encourage me to sleep more. Too bad Google bought Fitbit, which ruined the whole show for me :(.
I'm using a Xiaomi Mi Band fitness tracker along with the app Gadgetbridge (to replace the official Xiaomi app and stop exfil to Chinese servers) and another app called Snoreclock which measures sleep quality. It's not the fanciest setup but perhaps an alternative solution to your situation.