December is a great time to retrospect on the year that is finishing. Similarly, it is the right time to set goals for the year that is starting. In addition, this is a holiday season, and we all want to be in the holiday spirit and spend more time with our family and friends. I wanted to conduct a month-long challenge guiding everyone through these activities, however, due to my health, I was not able to post until now. Hence I will do as much as I can until the year ends. Please join me.