تعريف ومعنى "[let] {one's} heart rule {one's} head"

What is the origin of the idiom "let one's heart rule one's head" and when to use it?

The origin of the idiom "let one's heart rule one's head" is not related to a specific source but is a common expression found in the English language. The concept of the heart being associated with emotions and the head being associated with rational thinking has been prevalent in various cultures throughout history. The phrase is used when discussing matters of personal relationships, love, passion, and impulsive decision-making.