Having a sister in your life can either be a wonderful or terrible experience, depending on your relationship. If you have an older sister and you are a girl, she can often show you how to navigate the way through some of the more difficult areas of growing up. This is also true is you are a boy. Your older sister can help explain to you how to interact with the opposite sex. Younger sisters are a joy as well. They often worship their older siblings and it can be a nice experience to be admired. Relationships with sisters, like any relationship depend on the people involved.