"Knocking chip off one's shoulder" is a phrase that refers to someone who is easily offended or constantly looking for a fight. There are several synonyms for this phrase, including "being touchy," "having a thin skin," "being easily provoked," or "having a chip on one's shoulder." Each of these phrases carries the connotation of someone who is defensive or easily angered. The key to overcoming a tendency to knock a chip off one's shoulder is to learn to be more secure in oneself, to deal with criticism or negative comments more objectively, and to respond to challenges in a more thoughtful and positive way.