self-destructive
UK: ˌself dɪˈstrʌktɪv | US: ˌself dɪˈstrʌktɪv
adj. causing harm or damage to oneself, either physically or psychologically
adj. exhibiting behavior that leads to one's own downfall or failure
The word combines "self," from Old English "self" (referring to one's own person), with "destructive," derived from Latin "destruct-" (past stem of "destruere," meaning "to tear down"). The suffix "-ive" forms adjectives indicating a tendency or capacity. The term emerged in the early 19th century to describe behaviors or tendencies that undermine one's well-being, blending the concept of agency ("self") with the idea of ruin ("destruction").
His self-destructive habits included excessive drinking and reckless driving.
The artist's self-destructive tendencies overshadowed her talent.
Procrastination can be a subtle form of self-destructive behavior.
She realized her perfectionism was becoming self-destructive.
The character's self-destructive choices drove the plot of the novel.