By making criticism, we could expose our partner on his/her weaknesses and focusing on that weakness to evoke a certain negative emotion. By doing this, the focus of their discussion could be strayed from our own weakness/insecurities and could be used to avoid responsibility when we're in a fight with our partner.
Commit suicide. often people with these type of thoughts like i'm useless, my existence have no meanings and would often take their life in their own hands.,