To dream that you are Grinding something speaks to reiteration. Your life is a lot of a schedule. The fantasy may subsequently be an allegory for the "monotonous routine". On the other hand, the fantasy shows that you have "an issue" with somebody. Is it true that you are harboring any sentiments of hatred?

To dream that you are grinding something represents repetition. Your life is too much of a routine. The dream may thus be a metaphor for the "daily grind". Alternatively, the dream indicates that you have "an axe to grind" with someone. Are you harboring any feelings of resentment?