This question already has an answer here:
Especially when "nostalgia" is presented in terms of "a longing for the past" and "evoking fond memories." For example, a word which would mean "a fondness for the present or future."
A contextual sentence might be:
He never seemed to dwell on past times—good or bad—and had countdown calendars around his house for nearly every holiday imaginable. When making conversation with him, you could always sense an excited anticipation in his words. He claimed that it was an intense feeling of ___ which drove him to look forward so enthusiastically.