Here is an excerpt from one of Nirmala's ebooks entitled That Is That that you can download the entire book for free here.
The spiritual journey is a movement away from over-identification with the body and mind to the rediscovery of our true identity as infinite Being, and this can be two different movements. The first is dis-identification with the body and mind. Since identification is simply a movement of thought, dis-identification is simply a movement away from thought. The ego identification that we experience most of the time is the result of repeated thoughts about "I", "me," and "mine." That is all there is to it, but while we are thinking these thoughts the sense of self is contained in them. And since most of our self-referencing thoughts are about our body, our thoughts, our feelings, and our desires, the sense of self is usually contained in the body and mind.
Dis-identification from the thought form of the ego can occur whenever there is a deep questioning of the assumption in most of our thoughts that we are this body and this mind. Inquiry using the question, Who am I? can naturally weaken the assumption that I am the body and the mind. In fact, any deep questioning of our thoughts and assumptions can loosen our over-identification with thought, since so many of them are not very true. Experiences of no thought can also weaken the identification because in the absence of thought, there is an absence of identification. We all experience this when we get so caught up in what we are doing that we completely "forget ourselves."
Alternatively, directly sensing the presence that is aware of the thoughts can also dis-entangle the tendency to identify with the thoughts. The second movement of the spiritual journey is this recognition, or realization, of your true nature as presence or limitless empty awareness. It is a wonderful surprise to discover that everything that really matters in life, including peace, joy, and love, is found in this empty awareness. This emptiness is incredibly full and rich. It has intelligence and strength and compassion. Whenever we experience a deeper quality of Being such as clarity, peace, insight, value, happiness or love, it is coming from this spacious presence...