Looking for ideas on visualizing activity over time

I'm building a site for keeping track of my progress towards goals/resolutions during the year. Beginning of the year I would set some resolutions and then every week record whether I worked towards it or not and a note. Note is either what I did, or what prevented me from doing it. My inspiration is GitHub's activity map. I like the idea having an 'at a glance' view of how the year is going. My first attempt was to go vertical. It would be mobile friendly, but I couldn't find a good way to annotate which column belongs to which resolution. Second attempt was to go horizontal and use lines (or spacing?) to visually group resolution and progress together. Unfortunately then I can't think of way to add time annotations. Without those it's harder to see things like "in march I was terrible about walks, I wonder what happened?" I'm looking for ideas on other ways I may present this information. Suggestions on how to make this look good are also welcome.