You can come to terms with a mental illness diagnosis by understanding the term and idea of mental illness. How can something like the mind be ill? Can the mind be literally ill? Can a joke be literally sick?
Perhaps read books by psychiatrist Thomas Szasz to come to terms with a mental illness diagnosis. Some of his books include Psychiatry: The Science of Lies, The Myth of Mental Illness, Insanity: The Idea and Its Consequences, and Suicide Prohibition: The Shame of Medicine. He wrote about 35 books. I recommend them.
