i don't have DID either, but my t talks about parts. she described t to me like an orchestra. i picture it as the loud part of my personality is like the tuba, the shy part is like the picalo, then there are the child part, the parent part and the stubborn part...... for me right now, the child part is acting up, so the parent part (which i barely have) is trying to calm it down. i think it's some of the IFS stuff people mention.
http://www.selfleadership.org/