The liver works by treating toxins in the body and dumping them out of it.
Bad thoughts will poison your mind and feed your demons, remove them by writing them down in a notepad as vitriolically as possible, and then forget about them. If they resurface (which they should do less since the sting has been taken out and we tend to forget what is committed to paper) then simply dismiss them by telling yourself no-no, I wrote that down, I don’t need to rehash and remember it.
In time look them over and laugh at your silliness, or banish them forever by conflagration. (Yes, literally kill it with fire.) You may look for common themes and patterns and seek to address them.
Do be sure no one else looks at it if they happen to be a prominent problematic figure.