Dear lw1993:
You described yourself as a worrier: “I am a worrier.” Thing is, you were not born a worrier. You also described yourself as a pessimist (“always expect teh worse..”). Same thing.
Things happend during your formative years, your childhood. As a consequence of events and interactions you became a worrier and a pessimist. These are hurting your functioning.
I am suggesting you attend psychotherapy with a competent, caring therapist so to gain insight into your… forming, and through insigght and emotional regulation skills, you can slowly unlearn worry and pessimism to a large degree and learn realistic confidence and realistic optimism.
anita