What is the theme in Winter Dreams by F. Scott Fitzgerald?

Success is a them,e in this book. Dexter's vision of success involves a pursuit of the American dream of wealth and status. As Fitzgerald traces Dexter's movement toward this goal, he becomes, in essence, a social historian of his generation, chronicling the dreams of the men and women of the 1920s who saw unlimited opportunities in the new century. Even as a teenager, Dexter dreams of success. While working at a local golf course, he fantasizes about becoming a golf champion and winning matches against the wealthy men for whom he caddies, or dazzling them with his expert diving exhibitions. Later, his dreams involve his movement up into the wealthy class where he would be rich enough to marry Judy Jones. She becomes the embodiment of his "winter dreams" of a glittering world with endless glamour and promise.