Being familiar enough with your inner voice to recognize patterns of speech and at which emotions they arise so you can best manage your reaction. For example, I’ve for whatever reason switched from saying ‘shut the fuck up cuntlicker’ to ‘fuck you and fuck your mom’ when I have a thought that makes me feel bad and I know to fogetaboudit. It’s like noting in meditation and I’ve recognized the patterns in my language to know that whenever these phrases cross my mind throughout the day to move on from the thought I was having, to let it lie unstirred, and I can carry on with peace of mind after a minor subconscious interruption. I think the abrasiveness may also really help stop a thought in its tracks.