Part of being conscious means when one has to choose (with or without painful deliberation) between choices, consciously. Only a conscious person would be troubled by the choices, because he values his time and is careful; because he recognizes the trade offs involved and opportunity costs he might have to incur. He might end up doing the futile things impulsively, but he has more chances of gaining control over his impulses.
Part of being slave of nafs can be mindlessly floating in the flow of neuorotic impulses. I was careful to use modal verb 'can' because one might be very intuitive in one's approach towards doing things, yet free of base impulses that hate focus. I'd like to be that (latter) person though :D