The subconscious is a swamp of repressed feelings, complexes, phobias and desires that comes - no extra charge! - with the vessels we occupy.
It's not an easy roommate to have, up to all kinds of shady stuff, especially while we sleep. Some days I wake up exhausted, my hands sore from wrestling with the demons that it conjures.
It doesn't have much to do with the you that you think of as you. And there's no way to exert any control over it: best you can do is try to understand how it affects your moods and behavior, and make the necessary accommodations.
Like any roommate, you're better off trying to get along if possible.