1. Dream symbolism: Dreaming that a dead person is still alive and talking to oneself may symbolize nostalgia and reflection on certain emotions, memories, or unfinished things in the past, or it may be a manifestation of deep longing and unresolved feelings for the deceased.
2. Psychoanalysis: This dream reflects your subconscious thoughts on life, death, and interpersonal relationships. It may mean that you are dealing with or trying to understand certain emotions or experiences related to death, or have deep nostalgia and unexpressed emotions towards someone who has left you.
3. Life revelation: This dream reminds you to cherish the person in front of you, while also encouraging you to face and deal with past emotional entanglements. It may be a signal for you to review and organize your inner world in order to move forward better. This could also be an opportunity for self reflection, allowing you to reflect on your own worldview, values, and relationships with others.