Rapport is one of the primary tools of influence. Rapport is total responsiveness between people and is created by a feeling of commonality. Rapport creates alignment between people and true rapport will allow you effectively lead them in any direction.
Rapport occurs when you show people that you care about them, have their best interests in mind, and that you are similar to them. To influence someone you must first set your intention of the outcome you desire to create with that person and then get into rapport with them before aiming to achieve that outcome. Clarity around your outcome gives you direction and rapport creates responsiveness, focus, and cooperation between people—which leads to more powerful outcomes.