1) It is common, when listening to someone else talk, to be formulating a reply while the other person is still talking. However, this means that we are not really listening to all that is being said. Even good listeners are often guilty of critically evaluating what is being said before fully understanding the message that is trying to be communicated. The result is that assumptions are made and conclusions reached about the meaning, that might be inaccurate.
3) Some people want to jump in too early in a conversation and start to offer advice before they fully understand the problem or concerns of the person. I am most guilty of this one. Giving advice is natural for me, it is part of the intricately woven threads that makes me who I am. This does not mean than I can't be guilty of jumping the gun and give advice before the other person has satisfactorily conveyed their thoughts and feelings about a particular thing. Patience!