Sigmund Freud believed he was right. You challenge people like him and all they say is that you are suffering neurotic resistance and have not experienced the truth as they have.
Was Sigmund Freud religious? Jung did not agree with him. They fell out but both identified as psychologists. L Ron Hubbard didn't like Freud's stuff. He came up with dianetics/Scientology.
And what about Mesmer and his Animal Magnetism? Animal Magnetism and ideas about hysteria took over from exorcisms when the Catholic church lost its hold on the French after the Revolution.