hurt oneself unwittingly, be one's own enemy, injure or damage oneself, cut one's own throat, dig one's own grave

to reproach oneself

insulting or maligning a good or pious person rebounds upon oneself

you cannot blame others when your own people are at fault

throw one across the hip

trip someone

cope with your problems on your own, do not expect help from others

persist in one's own view, be adamant or obstinate

resort to action according to one's baser instincts, be obstinate, be mean

fling something in someone's face, return something angrily

be a burden to others

not give a damn, have no regard for, despise

return with anger

not care, deem low or base