All in the mind is a phrase that implies that something is purely a mental construct, rather than a physical reality. Synonyms for this phrase include the terms "psychological," "mental," and "subjective." Other phrases that convey similar meanings include "figment of the imagination," "illusory," and "fictitious." When something is "all in the mind," it is often difficult to apprehend or explain to others. However, this phrase can be used to describe a wide range of experiences, from emotions and dreams to beliefs and perceptions. Ultimately, "all in the mind" suggests that our experience of reality is shaped by our mental states and that the mind has a tremendous influence on our lives.