How specific do I need to be to trigger a lucid dream? Dreaming a person/situation enough works?

hey folks, quick question about inducing lucid dreams. do i need to plan a specific dream or like think about a certain dream where i want to enter beforehand to become lucid, or is just intensely thinking about a person or situation (trying to “create” or dominate it) enough to make the dream lucid? has anyone had success with focused thoughts like that, or do you need a full script/intent? tips and experiences welcome.