The idiom "a life of its own" means that something has become so powerful or influential that it seems to have a mind of its own and is no longer under control. It can also refer to something that has developed in a way that was unexpected or unplanned.
For example, if a rumor starts to spread about a celebrity, it can take on a life of its own and become a major news story, even if there is no evidence to support it. Similarly, a project or idea can take on a life of its own if it becomes so popular or successful that it starts to grow and evolve in ways that were not originally intended.
Overall, this idiom is used to describe situations where something has become so powerful or influential that it seems to have a mind of its own and is no longer under control.
• The social media campaign for the new product had a life of its own, going viral within days of its launch.
• The party started out slow, but soon the music had a life of its own and everyone was dancing.
• The art exhibit was so captivating that it seemed to take on a life of its own, drawing crowds from all over the city.
• The novel I am writing has taken on a life of its own, and the characters seem to have minds of their own.
• My hair is curly and has a life of its own; I can't control it.
• After years of neglect, the abandoned building had taken on a life of its own, with vines growing up the walls and wildlife taking over the space.