What are some fallacies and myths regarding mental illness?

Mental illness pt are violent and dangerous, unpredictable, irrational, retarded, lack willpower, incurable, cannot get into a relationship, toxic mediactions and talking therapies are useless. If we think about it most of diseases are chronic, and their treatments are chronic ones, just like mental illness drugs. Psychiatry is stigmatized since it is thought that they are unable to treat patients, saves people from dangerous people