Did it on my own check out my neck, check out my wrist.

I swear I ain't never expected it to be like this

Now a ni-g-ga gettin' rich I swear everyday we lit yeah

Everyday we lit yeah, you can't tell me sh-i-t yeah

Explanation:

answer is b

  a   having low self-esteem

  b   having abusive family members

  c   having poor school attendance

  d   having friends who discuss gang life

living torture and being abused makes one not mind harming other people.

and also not being supported and abusing one turns one into this state.