Dr. Phil's Number One Relationship Question

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After taping a 2002 Oprah Show episode, the cameras kept rolling as Dr. Phil and Oprah took questions from the audience. One audience member said she was scared to say no to people in her life, because she was worried she would lose them. That's when Dr. Phil revealed the one question you need ask yourself in any relationship. Watch the above video to hear his No. 1 relationship question.