The term catches the notion of letting your wantonness (satisfying your wants) have its way. So it speaks to a lifestyle of luxury, licentiousness, dissipation, and other expressions of trying to satisfy oneself (Ecclesiastes 2:1–26). As rider of the beast of Revelation 17, the prostitute was its mistress and so too was the mistress of its heads (kings) and horns (kings acting like bullies, mighty men); all were to serve her wants. Whereas the Lord God used his (rightful) glory to benefit his creatures, this woman used her power and wealth to focus fully on herself.
7 As she glorified herself and lived in luxury, so give her a like measure of torment and mourning, since in her heart she says, ‘I sit as a queen, I am no widow, and mourning I shall never see.’