[madjackwalker]

You're right. It's much more complex. Comparing happiness levels between work and non-work days was one way of trying to answer it. This method is still distorted by a lot of things, like you mention. I'm open for any different methods! If you have any ideas, I'd love to know :)

It takes me about 3 minutes every day to track happiness, and the advantages go much further than just the collection of data. It's also a moment of self-reflection and meditation in a way. It puts my mind at rest.