I want to become a filter feeding organism swaying mindlessly on the ocean floor. Although you won't know how to feel about it, biologists and men into the study of embryos have looked into the past and determined the likelyhood of us all being a race of precocious sea squirt larvae.
In theory it'd be possible to tap into the ancestral biological pathways of a metamorphosis, left in from our distinguished Chordate elders, and I would leave this life cursed of knowledge.