Middle class people's life:

The class or social stratum lying above the working class and below the upper class. It is a term that everybody uses every day, but hardly anybody ever defines. The earliest use of it recorded in the Oxford English Dictionary was by Queen Caroline of Denmark in 1766; however, she denied its existence in Denmark. The term settles into something like its present meaning by 1843, when George Borrow talks about ‘the middle class, shopkeepers and professional men’. The middle class are distinguished from the working class by occupation and education. They are distinguished from the upper class, apparently, by seriousness, moral purpose, and earning a living. Nowadays, a large proportion of respondents class themselves as middle class—as many as 80 per cent in typical surveys in the United States.

The term clearly refers to status rather than to class. People are judged to be middle class or otherwise more by their level of education, the physical conditions in which they work, and/or their consumption habits than by their relationship to the means of production. An example of each follows:

A social and economic class composed of those more prosperous than the poor, or lower class, and less wealthy than the upper class(1) Education. In Victorian Britain, when the present system of school-leaving examinations supervised by the universities was introduced, they were sometimes called the ‘middle class examinations’. For a century from the 1850s to the 1950s passing such examinations was regarded as a passport to the middle class.
(2)Physical conditions. ‘White collar’ is a near-synonym for middle class, and ‘blue collar’ for working class. Thus a job is middle class if it is done in clean conditions and does not involve heavy manual work. A working-class job is perceived as one done in dirty conditions which require protective clothing. This distinction is also fading with the rapid change in the nature of work since the 1960s.
(3)Consumption habits. The commonest measurements of class are those used by the advertising industry to classify those who read or watch particular media. But advertisers are interested only in consumption habits, not in class properly defined.

The basis for the commonly expressed view that ‘we are all middle class now’ is therefore: (1) that many or most of us call ourselves middle class; and (2) that the old badges of status of the working class are no longer reliable.