One of the easiest ways to obtain food in a survival situation is to go fishing. Unless we're spearfishing, fishing requires minimal energy, minimal resources, and yields a source of excellent protein and fat when successful.
Of course, even though fishing requires minimal resources, you still need a line, bait, and a hook. Bait is easy enough, just dig up a nightcrawler like when you were a kid.
A shoelace, paracord strand, or natural fibers can be utilized to make a line. The hook poses more difficulties. If you don't have a factory-made fishing hook on hand, you could be SOL unless you know how to carve one from scratch.
Primitive people utilized hand-carved fishhooks long before the advent of the stainless steel hook, and this skill can easily be utilized again to ensure your survival when you get hungry.
Learn how to make a hand-carved fishhook on the next page.