I changed my habit of walking self-quantification by replacing my paper and pen method and inputting the data. Now I have a spreadsheet that contains how many steps I made in aggregate for the day as well the weight and the time I put the weight in. Then I put the spreadsheet under a git repository so that I won't lose it when the computer crash and the damage is irreversible. I plan to eventually work on manipulating the data to generate graphs and tables, but I have not yet execute this plan.