hey I have the same thing. I've been trying to get on track by eating lots of filling foods like lettuce and greens, egg white omelettes, turkey and beans. I also made a trip to the grocery store to replace all of the holiday food, and I threw away all the cookies and leftovers that won't get me anywhere nutrition-wise.
I also skipped every workout during the holidays! nooooo... so I went for a jog today, wish me luck keeping that up.
From my experience in the past, it's really easy to drop the "binge" weight in 1-2 weeks because your body wants to flush out all the unhealthy food. Also if you have a really strict healthy diet, your body may have forgotten how to digest the high fat high sugar foods so if you get back on track before your body remembers how, you can avoid storing those calories. Just don't waste time or calories with foods that won't nourish you and drink lots of water!
Good luck youre going to do great