Did you ever notice how some things move in only one direction and can't be undone? Take baking a cake for example. Once you've mixed the flour and sugar and oil and eggs together, you can't take them apart. Once that cake comes out of the oven, it's a done deal. You can't decide that you didn't really want to put flour in the cake and take it out.
This is what adults try to do when they push their values on you. They try to make those values become an intrinsic part of who you are, so that you can't remove them from yourself or decide that you don't want them anymore, just like you can't pull the ingredients of a cake. They instill you with these feelings you don't want to the point that you still feel those things when you're own your own, like feeling like you should be getting work done when you really never wanted to have work ethic. Feeling like you should be polite to someone you don't like when you really never wanted to do that. Adults try to push values that aren't yours so deeply into you that you can't get them out no matter how hard you try. It's really sick.