We have learned thru years of experience to let alot of this negativity go over our heads.
We don't allow this person to drain us anymore.
I am definitley not a passive person now, i may have been at one time.
I have been working on a more outgoing positive attitude towards others for years.
It really does show.
I actually have been asked by others why are you so nice to people?
My reply "It works"
Like you i do get better service, not only in restaurants, but pretty much everywhere.
Physcological vampire, is definitley a harsh term.