You don’t have to choose an object; just know that you know all these objects. You don’t have to know any of them clearly; you just have to know that you do know all of them. Don’t know the object; know that you know.
Why are you able to know that you’re eating, drinking, looking, thinking and a lot of other things? You know because you’re aware. So, keep the awareness; recognize that it’s through the knowing that all this is known. Just try. All the objects that you notice are known by the mind. Actually, the mind already knows all the objects; you just have to notice that the mind is doing that work.