I can see the value of doing this but I think that this is a case of the 80-20 rule. Just the low effort 80, which could be keeping a journal where you reflect on how you felt a given day, why that might be, and what steps to take to avoid it from happening (or keep it happening) should get you pretty far.

Most of the things that really hinder my productiveness and happiness are the same things that everyone tells you about; sleep, diet, sunlight, not being stuck indoors all day, socializing. And most of these can be improved by making changes to my habits.

Other than that, is that I think that it's important to get into the habit of self reflection. Having a feedback loop on my own life has helped me find out what works and what doesn't. It's too easy to just go through the days slogging through and not making any changes because you don't even realize what's going on.