What do you need in a survival situation?
>Water
Bad water will cripple you with illness and make you vomit and shit out all your food and electrolytes
Take a water filter like the sawyer squeeze and one of the bladders it comes with
or an eyedrop bottle full of bleach (im assuming you have some kind of drinking vessel on you already)
>Shelter
Take a lightweight tarp or a spaceblanket and 5-10 meters of cordage, paracord is good stuff but boring ass string will work fine
>Warmth
Take a second spaceblanket and learn how they work, they reflect heat
and a lighter or some waterproof matches
>Food
You don't need food, you wont starve that fast
What will get you first is electrolyte depletion so take a small container, like a pill bottle, of lite-salt. the stuff that's about 50/50 sodium/potassium chloride, the other electrolytes dont matter aslong as you're keeping your potassium and sodium levels up
>Navigation
Take one of those tiny clip compasses
You not retarded, you know approximately where you are and what's in which direction
Pick a direction and keep walking
tldr;
>Water: filter or bleach
>Shelter: Spaceblanket or tarp and some cordage
>Warmth Second Space blanket AND lighter/waterproof matches
>Food: your fat fucking ass and some electrolytes
>Navigation: small compass
I could fit all of that in one pocket, i could fit all of that in my mouth if i wanted to