In every job, the most important interactions are between your customers. This also includes your internal customers (ie fellow coworkers in different departments). In order to thrive, one must develop the skills to convey one's point across, while still maintaining that trust and relationship you have as the expert in your profession. I have developed my customer service skills since I took on leadership roles in an early stage of my life, and know the significance of giving a client not necessarily what they WANT, but what they will actually NEED.