It's like 5 minutes to midnight, but during Christmas Holidays I managed to complete this website (with minimal possibilities to provide service for it's users and this: Allow you to keep records of things that made you happy. Since this is basic version, I hope that in near future I will be able to add more functionalities, I am planning to do app for Android / iOS, so will see how it will go.
Currently, you can login via Google and Facebook or register to website. You can create notes for every date and you can control whether it will be private (visible only to you) or public (it will be displayed public on main page)
Any feedback is welcomed on firstname.lastname@example.org