Tips for survival in the winter forest

During the warmer months have lost their way in the forest of tourists chance to get out of it, or wait for rescue workers is much higher than in winter. In the winter forest beyond their own fears and panic will have to withstand even cold and somehow earn their food, which in the cold season is extremely small. So how can survive the winter in the woods a couple of days before the arrival of help if you by chance brought back without matches, tents and other equipment?