Visualize

Be the change you want to see. Think of other ways you can be social besides going out to eat or for a drink. Get together with a group of friends for a walk or a workout at the gym. As a bonus, research has shown that people are motivated to work harder when they exercise in a group than when they work out alone.

One last point: Don't throw in the towel just because you had one night of overindulgence. Get right back on track and continue on.