There is also the subset of graciousness in accepting help, complements, or appreciation, which some people have particular trouble with. Graciousness in accepting criticism or correction is also a tough one (see humility perhaps).
I’m impressed when I read 19th Century lit of how some of the more admirable characters go to great lengths to be gracious to difficult people or to figure out ways of smoothing over unnecessary conversational tensions. Some formal varieties of etiquette, e.g. ways of speaking before royalty or in court, Robert’s Rules of Order, etc. serve as crutches that may make it easier to converse with grace.
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