The diabetes comparison is redundant. Anyone who raises the similarity should stick it in their pipe and smoke it. Psychiatric disorders are not medical diseases.There are no lab tests, brain scans, X-rays or chemical imbalance tests that can verify any mental disorder is a physical condition. This is not to say that people do not get depressed, or that people cannot experience mental or emotional duress, but psychiatrists have repackaged these emotions and behaviors as "disease" in order to sell drugs. Brilliant marketing campaign? Yes, but it is not science.

To answer your question, mental illness isn't something that should generalize or define your intrinsic rhyme in life. Psychiatry has been reputed and renowned for its quackery and loopholes but to sit here and to think mental illness is anything more than a pervasive byproduct of certain elements in life is also, redundant.