Positive:
* Visionary: A person with a clear, forward-looking view of the future.
* Idealist: Someone who believes in and strives for perfection.
* Imaginative: A person with a rich and active inner world.
* Creative: Someone who is able to produce original and imaginative ideas.
* Inspired: Someone who feels deeply moved or motivated by something.
* Hopeful: A person who believes in a positive outcome.
* Aspiring: Someone who has a strong desire to achieve something.
Neutral:
* Daydreamer: A person who often indulges in fantasies.
* Lost in thought: Someone who is deeply engrossed in their own thoughts.
* Unrealistic: Someone whose ideas are not grounded in reality.
Negative:
* Head in the clouds: Someone who is not aware of what's going on around them.
* Naïve: A person who lacks experience and is easily fooled.
* Utopian: Someone who believes in an ideal society that is impossible to achieve.
* Delusional: A person who holds false beliefs.
The best phrase to use depends on the specific context and the tone you want to convey.