[Ennui.]

There always seems to be a little bit of a "gray area" when it comes to things such as rubber bands or hair ties. A lot of people use rubber bands or hair ties as a sort of alternative, though what I've heard most of all is them snapping the rubber band or hair tie, rather than leaving a small one on the wrist. The "gray area" in the case I mentioned is that these objects CAN be used as an alternative, but if it gets to the point where it's leaving marks for a while and making you sore for a while, then it actually turns into a negative thing.

Personally, I see self harm as anything that is done to inflict damage, pain, or marks. Based on my personal definition, since it's used with the intent to harm yourself and inflict marks, it would be self harm. Inflicting pain definitely isn't the best way to cope.