I have a method.

I know because I've been a victim of psychic attacks.

What I do is cut a strip of paper. About 6 inches long. I focus on the negativity and I channel it through my writing hand.

Once that's done I end up with a bunch of squiggly lines. Those lines contain the negativity my mind has been infected with. In other words, the piece of paper contains all the negativity that was once in my mind.

I then set that piece of fire and scatter it's ashes.