[Erin Pavlina]

some guides have incarnated before and some haven't.

Guides are chosen for their wisdom, willingness, and ability to guide and advise an incarnated person.

Could a guide be chosen for karmic reasons? Probably but not usually.

Your higher self helps select the guides who will guide you in life.

there are different types of guides. some that act as conduit guides, like my Bob. Some that advise you on matters of the heart and some that help with matieral world concerns.