Not knowing the particular geographic/personal details, your list ought to start with this:
A map of the area preferably waterproofed
A decent compass
At least two different firestarting implements
A weatherproof shelter, could be something as basic as an oversized contractor's trash bag or a 10' x 12' tarp, to a bivy bag, to a tent
or good sleeping bag
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)