I suffer from OCD and disassociate from my OCD voice that desperately wants me to perform compulsions. I have recently started do the same with my alcoholic voice. There is nothing wrong with ignoring a self-destructive part of your own mind. In fact for me it has brought about a increased amount of self-awareness that I feel like differentiates me from most other people. I have found that I am now more in touch with my own feelings now than ever before. I think your self-destructive voice is lying to you and trying to make you feel like you have to include him in your decision making.