The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence.

As leaders and professionals, we are called upon to be at our best all of the time. Not only do we need to maintain and improve personal performance, but we as project managers and program managers are frequently responsible for the performance of others. One challenge is how we manage many of our positive and negative feelings that inevitably come our way in the course of our professional endeavors.

Leaders and professionals should know how to （） their personal feelings.