Fantasizing about Achieving Goals Has Opportunity Cost in Terms of Energy to Actually Achieve Goals

(p. C4) Fantasizing about achieving goals can make people less likely to achieve them, by sapping the energy required to do the necessary work, a study finds.
. . .
The researchers concluded: “Positive fantasies will sap job-seekers of the energy to pound the pavement, and drain the lovelorn of the energy to approach the one they like.”

For the full story, see:
Christopher Shea. “Week in Ideas; Psychology; Lost in Fantasy.” The Wall Street Journal (Sat., JUNE 4, 2011): C4.
(Note: ellipsis added.)

The article summarized is:
Kappes, Heather Barry, and Gabriele Oettingen. “Positive Fantasies About Idealized Futures Sap Energy.” Journal of Experimental Social Psychology 47 (2011): 719-29.