yes, i have known that for myself to be true - not always. sometimes i just know that i'm not going to get through unless it is done (but i think it is an alter or an ego state that does that). it feels outside of my control, like i am being influenced from within. Sometimes when things are really bad, the switch happens, it is a take over, and the cutting is done. but the compulsions are different- like being driven from a different place.... it is hard to give words to. in those times i know that i can't have dinner or empty the diswasher because the compulsion will take over and nothing is safe for me.
does that help?