How would you describe the character of Dexter as it relates to a theme of success in "Winter Dreams"?

One of the aspects of contemporary society that Fitzgerald
always seemed to write about, at least to some extent, is the American Dream. Here, in
this story, clearly Dexter is an excellent example of somebody from more humble roots
who, by hard work, manages to get ahead and become part of the "new wealth" of society.
He is clearly described as being different from the "old wealth" (those who inherited
their wealth rather than earned it):

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All about him rich men's sons were peddling
bonds precariously, or investing patrimonies precariously, or plodding through the two
dozen volumes of the "George Washington Commercial Course," but Dexter borrowed a
thousand dollars on his college degree and his confident mouth, and bought a partnership
in a laundry.

Note how Dexter
is compared to the "rich men's sons" who seem to be rather ineffectual in terms of
actually going out there and earning money. Dexter, on the other hand, shows that he is
"newer and stronger" by his get-up-and-go spirit.

However,
apart from his ability to make financial success come true for him, what is interesting
is that his "winter dreams" have focussed on attaining Judy Jones, not just becoming
wealthy:

It
did not take him many hours to decide that he had wanted Judy Jones ever since he was a
proud, desirous little
boy.

To him, Judy represents
the confidence and carelessness of the wealthy. Note key descriptions of Judy that
associate her with gold, such as "a slender enamelled doll in cloth of gold." Fitzgerald
is keen to associate her person with the dream of wealth and success that inspires
Dexter to quit his job at the beginning of the
story.

However, unfortunately, Dexter's "winter dreams" are
doomed to failure. When he hears of the loss of Judy's beauty, it appears that he
himself experiences his own loss of innocence and youth. As Dexter himself says, "That
thing will come back no more."