If you feel the need to talk people into doing (or giving) you something you want, you're SCREWED. Here is why.

If you come from a state of mind' where you feel you 'have to' convince or talk someone into doing (or giving) something to you that you want, you are coming from a fearful state of mind. That state of mind will stop people from doing or giving you what you want. 

When people feel that they have free choice, in most cases, they will gladly do (or give you) what you want.  

On the other hand, when they sense (or pick up VIBES from you) that they don't have free choice, they will refuse to do (or give you) what you want no matter how reasonable or logical your request might be. 

When you come from the fear that people won't give or do what you want, your fear guarantees that they won't.  - Frederick Zappone