If the only thoughts you had were the thoughts that are (generated locally) in your mind you wouldn’t have any trouble managing them at all. But your brain is more like a receiver of thought than it is a generator of thought. This is why you have thoughts that seem to come out of nowhere. Your brain, your heart, your whole body, is a sensitive receiver immersed in a vast ocean of thought. And in this sense you are more like a sieve than you are like a shell.
So here you are immersed in a vibrational world that was preceded by thought, is surrounded by thought, and you are taking in as much of it as you can. But they didn’t tell you when you were born that you would be taking in so many more thoughts than most of the people around you. Those who raised you were trained to exclude or ignore much of what they saw or heard or felt with their senses, and even more so to ignore or discount the nonphysical, vibrational aspects that surrounded them. So in order to fit in you began to manage—restrict—your thoughts.