* Refers to a specific family, like your own: "I visited my Family in Florida."
* Is part of a formal name: "The Smith Family has a long history in this town."
* Is used in a title: "The Family Business"
You don't capitalize "family" when it's used in a general sense:
* "My family is important to me."
* "The human family is diverse."
Exceptions:
* When "family" is part of a proper noun, like "The Family Circle," it's capitalized.
* If "family" is used in a specific context, such as "I'm going to the Family Reunion," it might be capitalized, though it's not strictly necessary.
In doubt? It's always better to err on the side of not capitalizing unless you're sure it should be capitalized.