A dream where you die implies that some positive change will take place in your life, or that you are moving on from old beliefs or ways.
Death in a dream may also suggest that you need to change your approach to something in your life in order to experience a positive outcome.
Death symbolizes the end of one thing and the beginning of something else, or a change in awareness. It generally has positive connotations.
To see someone die in a dream implies that you lack the qualities that person represents to you, or that you seek the qualities or a quality that person represents.
To dream of someone who has died can be a reflection of your memories, both good and bad, that you have of the person and the experience you shared with them. It can also be a way for you to deal with unresolved communication or lack of communication with that person.