For a long time I've wanted to create an Android/iOS app called "Sample Me" or something similar, for collecting exactly this kind of data about yourself. You design a survey with whatever data you want to collect, then the app gives you a notification at whatever interval you configure. A couple taps and you have a sample point about your life, which gets appended to a Google Sheet or similar, and maybe some in-app visualization of trends.
I'll probably never actually get to it, but it would be perfect for a thing like this.
I'll probably never actually get to it, but it would be perfect for a thing like this.