A big part of darkworking is self-exploration. If you're serious about giving it a go you'll need to start there before you start using power tactics otherwise you're likely to get hung up on prior conditioning.
I've seen massive changes just from doing the Foci
. What I've found is that gaining more control over yourself automatically increases your control over your environment. If you don't think you need it, try it anyway. You'll be surprised what surfaces.