Something there is that is knowing the thoughts and feelings arising in the mind. Any particular thought and feeling does NOT know itself. Something is recognizing, understanding, naming every thought and feeling. What can that be other than some knowingness or the Knower. That Knower cannot be one with the thought and feeling. Now, think whether you are the “Knower” or the thoughts and feelings that anyway are changing almost by the minute, hence do you honestly think that you yourself are so changing which would be the case if you indeed were that thought or feeling. Now, ask yourself the question, “How can one know the knower?” like Brihadaranyaka Upanishad asks. Ponder that question and see what answer(s) you get. That is the ultimate million-dollar question, ain’t it?