Perhaps the most powerful part of the phrase is the ellipsis—the pause—followed by "good boy."
The topic you've mentioned, "Old habits hard- good boy...," seems to touch on the theme of challenging and changing ingrained behaviors, particularly in the context of BDSM dynamics. Here's an informative overview: Mistress Ezada Sinn - Old habits hard- good boy...
“Now, let’s see if that old habit of thinking finally dies tonight.” Perhaps the most powerful part of the phrase
Let’s reconstruct the scene:
The first half of the keyword phrase, "Old habits hard," is a variation of the idiom "old habits die hard," and in the context of Mistress Ezada’s domain, it carries a heavy significance. "Old habits hard- good boy...