IF you're worth way more than you're getting paid, negotiations should be super easy. This is probably a terrible analogy, but think of working like mining diamonds and the employer like selling cut stones. If you mine huge diamonds with fairly regular frequency asking to get paid more is a no brainer for you and the company.
It's served me fairly well so far. The key isn't to minimize my ask; the key is maximize my value and then ask for something where I'm making good money and the company is making that amount plus all the benefits and other costs plus a margin on my labor so everyone leaves the transaction better off. The last thing I want is for a company in the business of employing @sokoloff to be in a money-losing business thereby.