I am a life-long nail-biter. I am thinking a habit like nail-biting can be thought of as an addiction in this way.

I have an explicit preference for letting my nails grow normally, and an inexplicit/unconscious preference for removing rough/uneven parts of my nails as soon as possible (this part seems entrenched).

I am a life-long nail-biter. I am thinking a habit like nail-biting can be thought of as an addiction in this way.

I have a preference for letting my nails grow normally, and a preference for removing rough/uneven parts of my nails as soon as possible (which I often enact by biting my nails automatically/uncritically/mindlessly).