Wiktionary
cut oneself
vb. To deliberately make incisions in one's skin as a form of self-harm.
Usage examples of "cut oneself".
One could not lightly cut oneself off from one's home and one's family.
There was almost a carnival atmosphere, and most of the disciples were singing hymns and spirituals and laughing as if to cut oneself into pieces was the happiest privilege they had ever been given.