Being killed has a couple of interpretations - you might be inflicting pain and suffering onto yourself in an attempt to rectify a situation that you considered shameful or in bad judgement.
It also could mean you want to end a situation or relationship and start new and fresh.
Consider your recent actions and places you have visited. Did you upset someone by saying something? Maybe you even drove too aggresively and cut someone off on the road... some of the meaning can be quite subtle.
As with fighting, struggles can mean conflict with others or perhaps your inner self. Killing can represent a stronger emotion and that you want to bring this conflict to an end.