Some people have a view of self and of the universe that obliges them to struggle for happiness, to yearn for happiness-"some time in the future"-perhaps next year or the year after that. But not now. Not at this moment. Not here. Here and now is too terrifyingly close, too terrifyingly immediate. They suffer from happiness anxiety.

Nathaniel Brandens Self-Esteem Every Day: Reflections on Self-Esteem and Spirituality (ed. Simon and Schuster, 1998) - ISBN: 9780684833385