From Survival Topics:
When traveling in the wilderness there are fifteen essential items that must always be brought with you. These 15 essentials are your survival insurance against a wide variety of situations you are likely to encounter by design or by accident.
The survival gear and skills you bring with you will serve you well. Staying warm and dry, well fed, well hydrated, and in good health will go far in your effort to survive in any environment. With all of your physical needs taken care of your morale will be high and you will be in an excellent position to navigate your way out or make contact with rescuers.
Be sure you always have enough to get you through the first night of an emergency. If you can survive an entire day and night then chances are you can survive several days if need be. Making it through the first 72 hours almost guarantees...