New year, New beginning?

Every new year, many people talk about a new beginning. Why they decide to start over again each year? I mean, rather it should be possible at every moment of life. Reading Ian Curtis "The past is part of my future, the present is out of hand",sure its a deterministic and fatalistic view. Being for-itself seems to be an option for every moment of our lives, not just when it starts a date that was set arbitrarily ...A song to start all over again