Daydream n. : A vain fancy speculation; a reverie; a castle in the air; unfounded hope.

Example:
How can i not Daydream so much?

Taxonomy
Daydream, psychologists, free encyclopedia, daydreamer, IPI, research, Recent research, new ideas, fear, workers, visualisation, History, Sports psychologists, search, visionary, hopes, ambitions, many different types.

Defination from the web:
Daydream by Paul César Helleu ... Daydreaming may take the form of a train of thought, leading the daydreamer away from being aware of his or her immediate surroundings, and ... The questionnaire, called the Imaginal Processes Inventory (IPI), has been used to investigate daydreams. ...