What is the source and real meaning of "provisional living " concept and is there an equivalent term? I found in this blog post the following definition :


  Psychologists have a concept they call “provisional living.” That’s
  the insistence, so often heard from people whose lives are stuck on a
  dysfunctional merry-go-round of self-inflicted crisis, that everything
  they don’t like about their lives will change just as soon as
  something else happens: as soon as they lose twenty pounds, get a
  divorce, quit their lousy job, or what have you. Of course the weight
  never goes away, the divorce papers never get filed, and so on,
  because the point of the exercise is to allow daydreams of an
  imaginary life in which they get everything they think they want take
  the place of the hard work and hard choices inseparable from personal
  change in the real world.


Searching on the web or in Google Books I didn't find a definition of provisional living.

I found on a blog a similar definition as the above in this blog post:


  Psychologists sometimes call this ‘provisional living’, whereby you
  tell yourself that you’ll truly come alive, truly be fulfilled and
  optimally creative when you’ve moved, married, divorced, retired or
  whatever. So much of our culture is based on it, it’s hard to resist.
  When the mortgage is paid then you’ll really be free, when you move to
  the country, when you no longer have to earn a living, when, when,
  when…and then of course you die.


I found a reference of provisional living linking it with the passage ritual also in the book Close Relationships : Family, Friendship, Marriage Studies in
Jungian Psychology By Jungian Analysts by Bertine, Eleanor:


  To overcome the father and the mother is to take up the
  responsibilities of adulthood, to sacrifice provisional living. Then
  life will surely become harder and more problematic, but potentially
  more meaningful. It is a momentous step, so much so that primitive
  peoples, who are close to the unconscious and its eternal laws,
  celebrate the transition by the always serious and sometimes rather
  grim rites of initiation.


I was not able to find a definition in a psychology dictionary or anywhere. 

What is the source of this concept? Is it used in psychology and is there a equivalent term that is more used?
The English Analytical Psychologist H. G. Baynes first described the provisional life in a chapter of his book "Analytical Psychology and the English Mind". For a good comprehensive description see http://web.archive.org/web/20150403145822/http://jungiancenter.org/essay/jung-provisional-life


  The Provisional Life. The dictionary defines “provisional” as “for the time being; temporary; conditional.” Something
  “provisional” is not lasting. It depends—on conditions, situations,
  people doing specific things. It is uncertain, more or less up in the
  air. Given a particular set of circumstances, a committee makes a
  “provisional” recommendation, in the understanding that things could
  change. A man undertakes a course of action, provided certain
  conditions are met. The essence of the word is transience.
              In Jungian psychology the concept of “provisional life” embodies the transient nature of “provisional.” The English Jungian
  analyst H.G. Baynes coined the term “provisional life,” and regarded
  it as a form of neurosis, for its resistance to living responsibly in
  temporal reality. The Jungian analyst, James Hollis, described the
  “provisional life” as an “…assemblage of behaviors, attitudes and
  reflexive strategies [that] constitutes our ‘false self,’…” Jung
  himself described the provisional life as “… the modern European
  disease of the merely imaginary life,…” Daryl Sharp provides a
  succinct definition in his C.G. Jung Lexicon: “A term used to describe
  an attitude toward life that is more or less imaginary, not rooted in
  the here and now, commonly associated with puer psychology.”