@Cashew Yes you can (that makes me think of Obama everytime I say it...)
The straightforward answer is: I don´t think they always have a functionality (i.e serve a need)
The ones who are "dark", that is to say; the ones who think I should end myself, do not have a functionality. They seem to be remnants of the bullshit that was repeated to me, time and time and time again, by two people (my parents) who were the definition of Frustrated and Angry.
The ones who are "light", that is to say, have a good purpose, have the functionality of "soothing" me when I feel like a child that cannot walk on its own two legs: but the fact that I keep on going back to that, keeps me in that perpetual cycle of feeling like a child that has no legs of its own.
What I need (I really need this), is not to respond to what my old habits say I need (i.e scream, cry and depend on imaginary people), but instead start to trust myself and know that I do have the strength to depend on myself. See. :D