From the book “HOW BAD DO YOU WANT IT?” By Matt Fitzgerald…
“A large body of psychological research has demonstrated that the more time people spend fantasizing about desired outcomes-from passing school exams to losing weight-the less effort they put into pursuing them and the less likely they are to achieve them.”
“Distinct from mental rehearsal, or practising a sport in the mind at rest, which is proven to enhance performance, fantasizing about desired outcomes is a maladaptive coping skill that may be associated with lack of confidence in one’s ability to make these outcomes happen through one’s own effort.”
This shows that there’s a huge difference in visualizing and fantasizing, and could explain why people have a hard time achieving their goals. They see the goal, dream of achieving it, but when push comes to shove, they do not want to exert the effort required to actually achieve their goals.