Habitual negative thought patterns are running you. (Well, duh, Angela!)
How to disconnect their power over you? Shine the light of day on them -- boldly examine those patterns, see them and where they came from, and ask yourself what they provide for you and what they cost you and others. Just shining light on them helps lift their power -- like turning on the light in your bedroom and seeing that the monster in the chair is only your clothes from last night, carelessly tossed.
What, precisely, is the pattern? Start paying attention to the language or images that habitually spring to mind, and notice how they repeat. I think you'll notice that there's a theme, if you look.