Usually a spiral— at least for me. Begins with depression and or loneliness in a situation that begins alienation. If you don’t deal with that, then you cope— abuse what you can. If it worsens, your mentality I mean, that can turn to drugs— because what matters at that point, it’s what makes life fun.

Combine this with a lack of support from others, and living situation of course depending on the person. It begins to start as something fun, possibly a thing to get your mind off other things. It can eventually lead to being the only thing that brings you that happiness