I’m the same person who "slaps" when I’m tired. No, I am not from the sales sphere, but I have to periodically work physically and carry weights. If you smile - it becomes easier, hz, what is associated with, but this is already an automatic reaction (when my mom called on the can with turf to pull, a smile automatically arose when lifting up).

No one is "forcing". Recognize to yourself that you are unhappy with the idea that no matter how the seller or waitress is asked, he is not nervous in response and does not feed the "sunny vampires" with a negative response - this is what you spit on a supposedly false smile. The smile is real. And you would just get more pleasure from someone's anger or tears, because you can feel a little like the ruler of the world.