Jeff, The holidays bring out all of the emotions that we try to keep under wraps at this time of the year, but you know what? You are human and you really do love your wife and want her back, but for now, she's trying to find herself. So, while she's out searching for that illusive happiness, you will need to continue on w/your life.
As for New Year's, go to your brother's. The night sounds like it will be fun and interesting and it will surely take your mind off of what your wife is doing.
Get some rest and find some things to keep yourself busy during your down time.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
