Quarrels may cause you to lose friends, but persuasion helps you to turn enemies into friends.
This is the biggest difference between persuasion and argument, argument puts two people on different sides, it is either you die or I live situation.
In a successful persuasion, the result should be win-win, you achieve your goal, and let the other person get what he wants.
Sometimes, in order to achieve certain goals, we have to find ways to persuade the other side, let the other side agree with our point of view, accept our opinion.
No matter where we are, we will meet people who have different opinions and ideas from us.
So, don't be stingy with your praise language, say a few nice words, this is not flattery, but a kind of kindness.