You get entangled in your concern with the world

"When you’re a being-in-the-midst-of-the-world, you obscure your mine-ness. You start to think of what you are as being simply defined by the projects that you undertake and how they’re structured by the public, by others, or by society at large. You think of yourself entirely in terms of how “They” dictate that things are. As a result, you don’t take responsibility for deciding the direction of your own life. Heidegger says you get entangled in your concern with the world."