“LESSON #3: Joe didn’t let people get a word in edgewise. He’d talk for five minutes without stopping. Of course, everyone thought him rude, egotistical, and stifling of the exchange of ideas.
Follow the Traffic Light Rule: During the first 30 seconds of an utterance, your light is green: You may speak without worry. During the second 30 seconds, your light is yellow: Chances are, your listener is ready to respond and waiting for you to finish. After the 60-second mark, your light is red. Yes, you’ll very occasionally want to run a red light — when you’re saying something important that couldn’t be broken up into two parts, allowing your listener to respond to the first part. But usually, at the one-minute mark, you should shut up or ask a question.
After you stop talking, half the time, shut up, half the time, ask a question such as “I’m not sure I was clear?” or “I’m wondering if that might apply to Project X?”"
Source: Kiplinger.com