No, as I am not a witch. But...
The experience that, probably, most influenced me was the quietest, least spectacular. The morning I awoke and realised I was addressing a pagan goddess. Not normal practice for a (then) fundie Christian.
There have been instances of shared images in dreams; a ritual for my father's passing that I later learned coincided with his time of death. Other things, also. But what actually influenced my direction most basically? As above.