Give you’re negative thoughts a sock
Are you also buggerd by house elves, saying things like “it won’t work”, “you’re not good enough”, “if you do that people think you’re mad”? Or rembering you of mistakes in the past, even childhood, if you try to sleep? Give them the sock!
Imagine them before you, while they say all this nonsence, and give them clothing. Then they have to go away.