At some point in our lives, we all begin to own a dream inside our head. It gets all the nourishment it needs in the beginning but as time passes, the dream begins to fade away being replaced by another dream which doesn't belong to us. Instead, we begin living a dream which somebody else, be it, a parent, a spouse or a friend saw it. Living another person's dream isn't a bad thing, because there are people who go on to do great things following another person's dream. In the process, the dream that was made for you loses it's purpose.
When you live your dream, you live your life. When you live another person's dream, you live that person's life. So, do not let go off your dream because each dream is special.