destructive

Self-destructive behavior is any behavior that is harmful or potentially harmful towards the person who engages in the behavior.
Self-destructive behaviors are considered to be on a continuum, with one extreme end of the scale being suicide. Self-destructive actions may be deliberate, born of impulse, or developed as a habit. The term however tends to be applied toward self-destruction that either is fatal, or is potentially habit-forming or addictive and thus potentially fatal. It is also applied to the potential at a communal or global level for the entire human race to destroy itself through the technological choices made by society and their possible consequences.
Individual self-destructive behavior is often associated with neurodevelopmental or mental disorders such as attention deficit hyperactivity disorder, borderline personality disorder or schizophrenia.

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