Build castles in the air
The phrase "build castles in the air" is an idiomatic expression used to describe the act of indulging in unrealistic or fanciful dreams or plans that are unlikely to ever be realized. Originating from the idea of constructing elaborate structures in one's imagination, the phrase suggests that these aspirations lack a solid foundation in reality and are therefore destined to remain mere fantasies. When someone is said to be "building castles in the air," it implies that they are investing time and energy into pursuits that are impractical or unattainable, often at the expense of focusing on more achievable goals.
This expression is often used to caution against wasting time and resources on unrealistic dreams or plans that are unlikely to come to fruition. It underscores the importance of being grounded in reality and setting goals that are practical and attainable. While there is value in having aspirations and ambitions, "building castles in the air" serves as a reminder to temper these dreams with a healthy dose of realism and practicality, ensuring that one's efforts are directed towards pursuits that have a higher likelihood of success.