The tone of what you say will sway people more than the content of what you say.
If you want something from somebody, most of the time all you need to do is give them some reason, any reason in a kind yet confident tone and you will almost always get what you ask for.
Do you want to move up in line at the grocery store? Ask the person in front of you if you can and explain that you want to be able to put your groceries in the back of your car and, if you’re kind and confident enough, you will almost always get a “yes” from the person in front.
The tone is extremely important if you’re interested in sharing a message effectively.