Never interrupt the interlocutor, even if it seems to you that he has strayed from the topic. Maybe he just wants to take into account all its nuances, rather than trying to make sure that you helped him. Shows his interest in that said the source. Ask questions on the merits of the topic, clarifying and probing, not to make it more difficult to answer. Occasionally nod assent. This is not flattery or servility, and the desire to encourage the interlocutor to the fact that it as much as possible to highlight the issue.
Do not express your interest lengthy description of similar situations in your life, unless you are told to do so. Know what your partner wants to talk about himself and not hear another confirmation of the fact that he already knows you. If you have made some not very profitable proposition for you, consider briefly with a look as if you are thinking on this issue. It is likely that your partner will increase the rate and you will part, pleased with each other. Speak quietly, but not quietly, if you want to be heard in the truest sense of the word, and did not ask again you do not have in order to understand your point of view, and in order to understand anything.
Forget about the rules of Dale Carnegie in relation to our reality. Most Russians do not trust the other person who smiles a lot, and the utterance of his name and did some unpleasant. Do not fall asleep interlocutor quotations from great to support your opinion. Great, too, can make mistakes, and the interlocutor the impression that you want to show how much you erudite, but not as far as you are interested in discussing the topic.
Admit your mistakes, do not try to prove their point of view, no matter what. From the side it would seem that you are stubborn or, excuse me, not yourself. If the source is wrong, do not rush immediately to correct it, or he might think that you or taunt him, or want to show that you are smarter than him. It is better to speak out like this: "Your point of view is very interesting," or "What if we look at it from the other side? "If you want to convince a friend that he was right, begin your sentence with the phrase" Yes, but ... "to your physiologically initially perceived as a denial of approval.