I did that on my own one weekend, identified and named about 13 or so I had/wanted and my therapist was thrilled and it helped me a lot as I was constantly checking to see what I was saying/thinking/acting out by name. I only remember "Sarcaster" :-) at the moment and "Queen's Knight" (a brave part of me :-) I know I had a "Critic" too though, and motherly/caring parts, etc.
I still have my therapist's voice in my head saying, "Not with THAT attitude!" when I was doing my nobody loves me/everybody hates me/I'm going out in the garden and eat worms discouraged act

I catch it every time now and it makes me laugh at myself to do so. One thing that has helped me in that area too is when I catch myself, take whatever attitude to the farthest, ridiculous extreme you can; in other words, make fun of the critical side of you so bad it gets too embarrassed to show its head anymore, LOL. My critic doesn't use very specific words, is vague, thinks like "you're stupid" like that actually means anything? I either start using fifty-cent words

when it does that or ask questions to get it to be more specific, "What was the exact transgression you are referring to that gave you that mistaken idea? Do you mean I am ignorant or did I make a mistake? I like making mistakes, it's the only way to learn! If I'm ignorant of something though, do let me know so I can learn more about that subject. . ." etc.