self-destructive

[ self-di-struhk-tiv, self- ]

/ ˈsɛlf dɪˈstrʌk tɪv, ˌsɛlf- /

harmful, injurious, or destructive to oneself: His constant arguing with the boss shows he's a self-destructive person.

reflecting or exhibiting suicidal desires or drives: Careless driving may be a self-destructive tendency.

Origin of self-destructive

First recorded in 1645–55

self-de·struc·tive·ly, adverb

To break her self-destructive cycle and heal, she decides to hike 1,100 miles of the Pacific Crest Trail solo.

Exclusive: The Making of Reese Witherspoon’s Golden Globe-Nominated ‘Wild’ |Marlow Stern |December 12, 2014 |DAILY BEAST
So they do what they are told to do, even when the path is self-destructive.

College Football Fattens Players Up and Then Abandons Them |Evin Demirel |October 4, 2014 |DAILY BEAST
Norquist did, though, candidly note that, “there are outliers always willing to give a self-destructive quotation.”

The Gettysburg of the GOP Civil War |Dean Obeidallah |February 15, 2014 |DAILY BEAST
Indeed, if this was self-destructive, then provoking another stand-off—during an election year, no less—would be suicidal.

Finally! The Republican Fever Is Broken |Jamelle Bouie |October 16, 2013 |DAILY BEAST

Brilliant as he is in the courtroom, his self-destructive personality leaves his personal life in shambles.

Fall-Winter TV Preview: Snap Judgments of 2013–14’s New Shows |Jace Lacob, Kevin Fallon |July 16, 2013 |DAILY BEAST
It had been to her what its sting is to the bee—a thing which if once used in self-defence is self-destructive.

Mistress Wilding |Rafael Sabatini
The emotional reactions we create in ourselves become more exaggerated, distorted, and self-destructive.

When You Don't Know Where to Turn |Steven J. Bartlett
All Anarchy, by the nature of it, is not only destructive but self-destructive.

The French Revolution |Thomas Carlyle
Indulgence in solitary vice is self-destructive of all that youth most values—a profanation of his own body.

The Ladies Book of Useful Information |Anonymous
As her self-esteem grows, she comes to realize that her marriage is a self-destructive relationship and decides to divorce Fred.

When You Don't Know Where to Turn |Steven J. Bartlett