Why am I like this?

In a sentence, Blue Sisters by Coco Mellors is about extremely hot and successful women with some gnarly personal issues. That's right, you can have a beautiful house, a high-paying job, and an adoring wife yet still feel the need to steal an occasional ciggie behind the shed to relieve life's stresses. I missed the other important part of the plot, the three protagonists are all sisters. There was a fourth living sister up until her death a year ago, Nicky.  Nicky died from an overdose, and everyone else in her immediate family has addiction issues too except, for her boxing sister Bonnie (who, according to the text, is addicted to pain anyway) and their enabling mother.  Our story begins with these accomplished women coping with their grief on the anniversary of Nicky's death. The book is told through the three alternating perspectives of the sisters Nicky left behind. The eldest, Avery, is a successful lawyer living in London. Bonnie is a typical middle child who stays o...