There's another way to frame this. You're in a lifeboat with 10 other people. None of you chose to be here, but fate made it happen. You're the only one who go

There's another way to frame this. You're in a lifeboat with 10 other people. None of you chose to be here, but fate made it happen. You're the only one who got on the boat with a backpack, and it's full of food. Your food. Do you share it? It's in everyone's best interest (including yours) if you do. Not only will this keep them from throwing you overboard, but by establishing a basic level of survival, you can cooperate trustingly and row to safety.