For this ritual, make sure it is done during the day and that you have the attention of the sun goddess. Then make sure you have music playing with strong drumming, maracas, or any other instrument that resonates on the spiritual plane. Then say to the body thetans stuck to your aura “Body Thetans, You do not need to go into the light but you cannot stay attached to my aura, I command all body thetans to leave my aura” and then it will be done. For any stubborn evil spirits, take sharp blades or scissors to avoid being cut, and pass them from the top of your head down your body so the attachments to these spirits are cut.
If you ever astral project or leave your physical body you may get body thetans wanting to steal your body. They cannot do it by force but may just ask. Unless you have another body to go back to I don’t suggest doing that.
In Lavenderism, it is said that body thetans come from a spiritual bacteria that fell into the clay used to create humanity, and became stuck inside of our physical bodies during creation. Once they are gone, your talents and gifts will stop being suppressed and they cannot bring bad luck or negative energy to you.