Mahakal Tattva
Blessed by Goddess Durga (Navadurga). Grants fearlessness, removes depression, and bestows dynamic energy.
"ॐ नमः शिवाय" (Om Namah Shivaya) or "ॐ त्र्यम्बकं यजामहे सुगन्धिं पुष्टिवर्धनम्"
For best results, wear after morning bath facing East or North on Monday or Shivratri.