The following tips will help you to persuade people:

• Ask for something you want when a person is in a good mood. Not very fair but the right technique;
• Smile;
• Emphasize all the benefits of your idea to THEIR further business or life;
• Don’t be afraid to agree with the person but only to some extent. For example, use such phrases as: “Okay, but…” or “Yeah except…”;
• If you really have some false conclusions, admit it – this step will make you look trustworthy;
• Try to analyze why your opponents are against your idea and prepare arguments to overdo them;
• Try your best to sound like a friend and not like a persuader;
• Don’t forget about credibility and authority and if you don’t have them yet use references to reliable sources;
• Know when to give up )))

And always remember the following phrase of Aristotle: … for persuasion to be truly effective, three elements must be present: trust, logic, and emotions.