I try not to get too obsessive about data collecting (I'm talking about self-tracking here), I like to check now and then, as with the clothing audit or with my expenses, and make any adjustments I want to, but then I let it alone and get on with life.
I tried one of those wardrobe/make outfits things, but too boring and time consuming and I deleted it. I like a youtuber - slaphappysewing - very down to earth and nearer my age (@cryptocariad may follow her). She mentioned that taking pictures and filming herself had changed her perception of herself and she suggested trying it for your own evaluation, regardless of whether you were going to publish anything.
The website you linked looked interesting - my masters degree was on a very similar theme: digital media and society.