Once you have identified with some form of negativity, you do not want to let it go, and on a deeply unconscious level, you do not want positive change. It would threaten your identity as a depressed, angry or hard-done by person. You will then ignore, deny or sabotage the positive in your life. This is a common phenomenon. It is also insane.
Eckhart TollePay attention to the gap - the gap between two thoughts, the brief, silent space between words in a conversation, between the notes of a piano or flute, or the gap between the in-breath and the out-breath. When you pay attention to those gaps, awareness of 'something' becomes - just awareness. The formless dimension of pure conciousness arises from within you and replaces identification with form.
Eckhart TolleThe ego is just waiting to identify with anything. Whether it's your misery or being a great meditator, it seeks some identification.
Eckhart Tolle