Often we allow ourselves to get all worked up about things that, upon closer examination, aren't really that big a deal. We focus on little problems and concerns and blow them way out of proportion. A stranger, for example, might cut in front of us in traffic. Rather than let it go, and go on with our day, we convince ourselves that we are justified in our anger. We play out an imaginary confrontation in our mind. Many of us might even tell someone else about the incident later on rather than simply let it go. … …Whether we had to wait in line, listen to unfair criticism, it pays enormous dividends if we learn not to worry about little things. … 1.진한 글씨로 쓰인 것들이 정확히 무슨 품사로, 어떤 뜻으로 쓰였는지 궁금합니다. 2.그리고 big a deal은 어순이 좀 이상한 것 같은데 어떻게 해석해야 하나요? 3. had는 왜 과거로 쓰였을까요? 4. commit to doning은 그냥 do라고 말하는 것과 무슨 차이가 있나요? 답변 해주시는 분들 복받을 거에요