Copied from http://hbr.org/tip/2014/09/22/win-someone-over-by-asking-for-advice-?utm_campaign=Socialflow&utm_source=Socialflow&utm_medium=Tweet

Win Someone Over by Asking for Advice

Asking for advice is a powerful way to win someone over. Whether it's negotiating for a raise or trying to win support for a proposal, the simple gesture of soliciting advice can make you more likable, encourage your counterpart to see your perspective, and rally commitment. And the beauty of this approach is that it costs so little. When you ask an opponent for advice, you flatter the person by valuing his or her opinions and expertise. For example, before you start making your case in a negotiation, ask the other person questions. Let him or her experience the "joy of talking." Asking for advice also puts the other person in your shoes. He or she will see your perspective and become sympathetic to your cause. Doing this can turn your adversaries into your champions.