If someone has stabbed you in a dream, then it shows your fear of being unappreciated and unapproved. The dream could also show the features you have lost such as the control of your life, power towards others and management of your and other people actions. On the other hand, the dream may be the warning for you to be more careful with those around you, as you never know you can stab you, especially from the back, when you will be unable to see or know it. If you stabbed somebody in your dream, then such dream could indicate the aggression you have towards that particular person.
Dream dictionary: Stab dream meanings
…Dreaming of a knife is bad for the dreamer, as it portends separation and quarrels, and losses in affairs of a business character. To see rusty knives, means dissatisfaction, and complaints of those in the home, and separation of lovers. Sharp knives and highly polished, denotes worry. Foes are ever surrounding you. Broken knives, denotes defeat whatever the pursuit, whether in love or business. Dreaming that you are wounded with a knife, foretells domestic troubles, in which disobedient children will figure largely. To the unmarried, it denotes that disgrace may follow. Dreaming that you stab another with a knife, denotes baseness of character, and you should strive to cultivate a higher sense of right….