Rebellion to me is when you are given a clear directive and you purposely go against it because it does not line up with what you desire to do and\or your thoughts and beliefs on a subject.
When I think of the "witchcraft" practice, I think rebellion is compared to that because when you seek out a medium, tarot, witchcraft, etc. you are looking for answers from a source that is not God. And since we are blessed to know of Gods existence and have been given Jesus and the Holy spirit as a way to speak directly to God, then when we go to this alternate source for an answer, we are consciously rebelling because we are very much aware we need to go to God for our answers.
You are purposely choosing what you desire over a directive.
Take the time to reflect and be fully aware of it...repent, and ask God for help to obey him. Especially if you are aware and don't feel the "need" to change your course of action to align with Gods will.
We are walking a dead mans path.