I Have Been Possessed

It speaks his name every single night and day, reminding me constantly when all I want to do is forget....It also plants other thoughts in my mind and controls my eyes. Thus putting me to shame...Its been this way for years! How do I cast this particular demon out? I don't know how I let it in...I suppose when I forced myself to look away and then the next thing I knew I couldn't look anyone in the eye. The voices in my head entered from me playing with tart cards when I was 19...Its the same voice that told me love is wrong! Sigh....I hate schizoaffective disorder.