Trying to wrap my head around this

Saw a clip of Chelsea Handler on the Jennifer Hudson show. She said, 'Ive been having a lot of sex' and the audience clapped. Hudson asked, 'Oh is it like a love awakening?'

and Handler said, 'No not an awakening, but whoever is with me intimately or in a relationship, they're lucky. They're lucky to be with me and I know my worth'. Hudson said 'Oh we like that!'

I can't even FATHOM the mindset of having confidence to feel that way. To feel you are someone others would want to have in their life, or to love. Have you ever felt this confidence, and how did you arrive at it?