Try to determine your approximate position on your map and make reasoned choices about which way to proceed. If darkness is falling or some other situation, such as the weather or terrain, makes it obvious to you that rescue will not be immediate, you need to plan to spend the night in the woods as safely and comfortably as possible. A small fire will warm you, raise your spirits and assist rescuers in spotting you. Suitable natural shelter for the night should be a consideration. Try to remove yourself from the elements of cold, rain or snow using whatever is at your disposal, i.e. large, low-hanging trees, boulders or rock walls, which can be used as a shelter with a little reinforcement of natural materials.
Food is a low priority as the human body can go for a long period of time without food.
Potable water is a necessity and must be secured if your adventure lasts more than a couple of days. In that case, a source of clean water must be found or available water must be boiled or filtered to make it potable. Stay in one area. Do not attempt to find your way if you are sure others are searching for you. Wandering aimlessly hinders a well-planned search.