Not >>3 but
As a former cutter, I could always hide it. I did it in my outer thighs, and I always wondered why people did it in their arms. I never wanted any attention, I just did it for a few really really bad months I had in which it was my only relief to mental pain. It was like crying until you get exhausted but way shorter and your head didn't hurt afterwards and way way more effective.
The weird thing is that even quite a few years later, when in mental pain I always think about cutting. I've not done it again, but it appears like a reflex. I barely did it for a few months, but it sort of stays there.