If you're an expat wife from the US, Canada or England whose husband's company is sending him on assignment to a metropolitan area where he will be a mid-to-high level representative, or is a diplomat (of some stripe!) and you will be making the same wage (or possibly adjusted up!) for the assignment: this book is for you.
If you're an expat wife whose husband has picked up either a freelance job overseas in developed country like America, Canada or the UK, will be on the lower end of the totem pole, you'll be making local wage, or not in a metro: pick it up from your library instead.
Much of the advice here is targeted towards women with children whose husbands will make the same wage at home, and advice about taking time for yourself is important - but for spouses like myself who live on local wage over 6 hours away from a local metropolitan area, and have no children, this book is significantly less relevant. It's a useful overview of the sorts of experiences an expat wife may face, but everything needs to be taken with a grain of salt - they simply aren't viable, or reasonable expectations, for everyone going abroad. If I had one of the maids that the author portrays as nearly-necessary and utterly pervasive, my husband and I would be shelling out nearly 1/3 of his monthly salary to pay wages for someone else.
A book about the culture of your new host country, combined with a book on cultural adjustment and relocation, would stand you in equal stead with this text - and be significantly more specific. Pascoe does a disservice to the reader in her generalization to meet all readers; it is also focused towards individuals moving from the West, rather than an individual coming from a developing country (where they may very well speak English as one of the official languages) to one of the major developed nations.
In sum: Good one-time read, great for borrowing from the library, but the information in it is rather targeted and much of it may be irrelevant for your situation.