i use a daily color coding calendar for health look backs. It goes like this:
GREEN: Great, "i feel almost like i don't have PD today".
GREEN: Good, "i know i have PD, but it's not interfering with my daily tasks."
YELLOW: SoSo, " my symptoms are somewhat interfering with my daily tasks, requiring me to push through to complete them."
RED: Bad, "i'm on the couch watching movies today and staying home."
i found this free app "EverCal" but would like to find a better one. It helps me to understand how PD is, or is not, affecting my life as the months go by.