This is often about feeling trapped by the influence of your mother in your life. The influence is that you were totally dependent on her in your formative years. Those habits are often not easy to change.
But if your mother or partner is possessive and controlling, then here is another situation the octopus can indicate. Hadfield in Dreams and Nightmares, says that a baby often seizes upon its mother’s breast with this feeling, so it may represent the desire to posses or devour others. The octopus can also symbolise any unconscious fear which may drag you into its realm of irrational feelings, or any influence you fear will engulf you.