It is more properly to do with supreme power. Worn as a talisman it protects from evil, and will often be perceived in this way in a dream.
It is the T cross, not the cross of sacrifice.
2- In the psychological sense, the tau cross signifies the meeting of the physical and the spiritual and all that it entails.
3- Spiritually this cross signifies the key to supreme power and living a truly successful life. # [1]