Witchcraft is something that calls to you.
If you are a Witch, you know exactly what I mean. 
You don’t have to try to be a Witch. 
You don’t have to change what you believe to be a Witch. 
You start to read, or you talk to other Witches, and you find that the information you get seems to describe almost exactly what you’ve always felt. 
You find that there is a name for what you already believe. 
It’s called Witchcraft.