When you stop writing your name and restrictions on food labels: “this belongs to me, please ask permission before taking unless your mammesh hungry or thirsty “
When you stop writing your name and restrictions on seforim : “this belongs to me, please ask permission unless you mammesh can’t find your gemara and you’re late to shiur and your rebbe is mad at you cause you always come late, then and only then can you take the gemara without permission but please return it to it’s makom kevua when your done.”