Drug abuse, bad habits, self sabotage?
Sometimes it is just neglect and inability to put effort in self love.
And very often it is as well the spirit trying to get free.
The body and the mind can feel like a prison for some.
Getting drunk or hurting yourself physically weakens the body, the mind's prison or society's conditioning and offers a gateway to the spirit world.
You can see for instance self mutilation as a self sacrifice and a vindictive "fuck it" to those around you.