I've always found obsession to turn into resentment. For myself I need to give myself permission to take a day off and find a schedule that works for me.
Different approaches work for different folks. When I was new to running, I had a good streak going for a long time. Now that I'm training for ultras, I focus on quality training, which can mean spending a Saturday playing with my daughter and not thinking about running. My focus has shifted to weekly mileage and Garmin-dictated training load.
