Interpersonal skills affect almost every area of business. Your people skills come into play when you enter into a negotiation, close a business deal or woo a client. They can help you build partnerships as well as a collaborative team environment. If you intend to be a leader and not just a manager, you should hone these interpersonal skills: communication, active listening, feedback, trust & honesty, selflessness, self-awareness, compassion and empathy