If you're a tech person talking to clients, stop talking about technology. Start listening to people, figure out what they need, and make them happy. I guarantee you, a better fluxcapacitor will not make them happy, even if they need one. I spent 10+ years selling IT services as a principal at a small consultancy. Before that, I went to Journalism school. Let me tell you my best interview tips, people tips, and how and why you make clients happy.