The Romans asked Janus to bless the launch of every new enterprise. The Agonia, on January 9, was an annual celebration in his honor, as was the start of each day, month and year. The purpose is to honor your new start, and especially to ritualize your resolutions. For example, you listed four different resolutions, so think of four different ways to activate each aspect symbolically. In keeping with the Janus archetype, visualize that you are passing through a threshold to a new era in your life, a new way of living.
Most people wait until after they've lost weight or achieved a goal before celebrating.
By the way, Aphrodite's energy, too, is helpful when making New Year's Resolutions. Thank you for sharing your question with us. I was working really hard at the office, and because I was so busy, I felt I had to forego any birthday festivities. Young gorgeous guys, Arnold Schwarzenneger, regular guys, nerds, etc. They had already started partying and eating without me, but they were there in honor of me nonetheless.