This is not one of those essays about how empowering it is to deal with cancer. You’ve read all of those. Those stories are laid out like this: Mother of three diagnosed with breast cancer. She undergoes surgery, chemotherapy, and radiation. She loses her hair, forgets her kids’ names, and misplaces her mind. With just enough healthy cells remaining in her body to drag herself out of bed each morning, her doctor sprinkles the fairy dust of…