One does not have to look far to see the reality of Orwell's caution. In China for example, the government controls expressions (media) and associations (groups, friends). There is a lack of judicial independence and due process, women are discriminated against in a number of ways, etc. The penalties for displeasing the goverment can sometimes mean torture and even death. Many of the same repressions can be found in countries in Africa and other parts of the world.
I would certainly call all of these examples a "true assessment" of how governments can seize control of "every aspect of human life."
These examples above, btw, are why lots of people here in U.S. get very nervous about legislation like "The Patriot Act" which allows the government to tap phones, search mail and email, and financial records without a court order.