Family is what you make it

In Harry Potter, our first encounter with Harry's "family" the Dursley's, we are able to get a great depiction of  how Harry is treated compared to the rest of the Dursley's. Harry obviously means little to the Dursley's, and is treated as so, given very little living area as well as a severe lack of freedom. While we know that Harry is actually related to the Dursley's by Harry's mother, he is treated as if he is a third class citizen. To Harry, the Dursley's are not his real family, and we are able to see how Harry starts to form his own family throughout the book. Later in the book it becomes obvious that Harry has many people at Hogwarts who care about him, and would consider him as family. Hagrid as well as Ron are very notable in this aspect since both have treated Harry as family most of the way through the book. Hagrid is almost like a caring uncle to Harry as he tries to guide harry through the wizarding world, where Ron is more like a brother in which he can confide in. I believe that this theme is also prevalent in the way that Hogwarts is separated into separate houses, with even members of the same family in different houses.  At Hogwarts you are separated into houses based on your values, which also typically correlates to the people you hold close to you, which I find very interesting. While Harry may have gone to Hogwarts with what he had imagined was very few people caring about him, he quickly befriended many due to his always do good attitude.