If you miss the chance to set your New Year's resolutions on December 22nd, you'll have another opportunity. December 24th has a New Moon in Capricorn that means business.
New Moons mark the start of a new cycle. This New Moon occurs on the heels of the Winter Solstice (the longest night of the year, therefore, the start of longer daylight hours). The momentum of new beginnings is doubled. How can you not start fresh?
It's all happening in Capricorn so you'll want to work with reality, boundaries, discipline, routine, structure and responsibility. It's the premium influence for starting a diet/exercise regime that will stick. Check out where Capricorn falls in your chart: this is the area of your life that will come together if you apply some rules.
This New Moon will be felt most strongly by those with planets or angles (cusps of the 1st, 4th, 7th and 10th houses) between 0-2 degrees Capricorn and Cancer.
Note that Capricorn is the sign of maturity and limits. Whatever you start now will move at a measured pace as you grow into it. This is a long-haul influence that works for serious intentions only.