Am I good enough

I wish I could find that spot in my brain that tells me I am not good enough. That spot that says I always screw things up. That place inside the vast depth of my subconscious that speaks to me all day long of all things negative. The spot that says to me everyone is going to leave me cause I am going to do something wrong. The spot that tells me everything is my fault and no one will ever forgive me. Is there really hope to get rid of this place? I try to think positive. I try to be positive. But behind the smile, behind the giving person, behind everything I feel like I am nothing. I feel like everyone leaves me. To the point where when I discipline my dogs at all I instantly expect them to shun me and never come near me again. Where does this come from? Why is this here? Can I turn this around........