This mantra is very powerful for Karyasiddhi (Completion of difficult tasks)

She is one of the Mahavidyas or Shivasakthi or Parvati, ten goddesses from the esoteric tradition of Tantra, and a ferocious aspect of Devi, the Hindu Mother goddess. The goddess, usually wear tiger skin skirt and standing or seated on a divine, holds her own severed head in one hand, a scimitar in another. Three jets of blood spurt out of her bleeding neck and are drunk by her severed head and two attendants.

Chhinnamasta is a goddess of contradictions. She symbolises both aspects of Devi: a life-giver and a life-taker. She represents death, temporality, and destruction as well as life, immortality, and recreation. The goddess conveys spiritual self-realization and the awakening of the kundalini – spiritual energy. The legends of Chhinnamasta emphasise her self-sacrifice – sometimes coupled with a maternal element – sexual essence, and self-destructive fury.