CEOs use data to determine baselines and establish goals, to keep moving forward. It can do the same for your overall health as well! You are the expert on your body and health. Regularly keeping track of changes can help identify what is normal - and what isn't.
 
This diary documents health with two simple sections and open-ended questions. There's a place to list your healthcare team, note your challenges and celebrations, and a cue if you think follow-up is needed. Enough pages mean daily entries for a month.