Examples:

• I have the right to a life of its own.
• A secret like that has a life of its own.
• In Shingon buddhism, the sword has a life of its own.
• This ship seems to have a life of its own.
• This site has a life of its own.
• Your magic is taking on a life of its own.
• And the flock takes on a life of its own.
• The film has a life of its own and it works.
• The experiment has taken on a life of its own.
• The dress led me on, it had a life of its own.