Without further context, the phrase is ambiguous. Here are potential interpretations:
At the end of the week, take 15 minutes to reflect on your progress. Did the 8-minute bursts work for you? Did focusing on one daily goal make you feel less stressed? Adjust the system to fit your unique lifestyle. The "New" in the title is all about evolution and continuous self-improvement. Why It Works: The Psychology Behind the Method mrs+keagan+1+8+new