Shiva after the Demise of Sati experienced entered into a deep meditation. With out his Electricity no creation was doable and this brought about an imbalance within the universe. To provide him out of his deep meditation, Sati took start as Parvati. This Tripura Sundari Maha-Mantra may help to https://www.youtube.com/watch?v=OnBTYRqg61k&t=6s