There is The Rule of 50/50 that I recommend as it relates to the balance of talking versus listening throughout the interview process. If you find yourself talking more than 50% of the time during the course of an interview, then you are talking too much. Take a Breath. Hold the Phone. Stop, Drop and Roll....whatever idiom you like best here, do it! Going on and on about yourself is a definite no-no during the interview process. As a candidate, avoid giving long-winded answers to questions and by all means, avoid interrupting the interviewer. Focus on brevity, clarity and impact in your statments.
It is just as important to ask questions as it is to answer them during the interview process. Nothing is worse when asked if there are any questions and a candidate answers, "No, I think I have all I need." Use the interview process as way to get others to talk about themselves. People love to talk about themselves. Ask questions to gain better insights about the job, the organization and each interviewer. Candidates who ask probing questions have a better chance of getting hired than those who do not. Asking thoughtful questions demonstrates a candidate's interest in the company and job.
During the interview process, try to gain understanding of the organizational significance of the position and its potential business impact. What are some broader company initiatives and goals? Is this a new role? Did someone leave? Find out why. Be genuinely curious and questions will come naturally. A successful interview feels more like a good conversation. Aim to make it one.
Keep in mind that when interviewers ask open-ended questions, they are assessing your communication skills. "Tell me about yourself...," is not an invitation to tell your entire life story. Somewhere between 1-2 minutes, you will start to lose the interviewer's interest. Pay attention to body language. If the interviewer's eyes start to wonder, make your point and move on to the next topic.
Start with headlines, then fill in the blanks during the course of the interview. Make sure you give examples and tell stories that are relevant to the open position. Accept that not every detail about you and your career needs to be divulged during the interview process. Stick to pertinent information and examples. Your goal is to keep the interview conversational and always remember The Rule of 50/50!