There are four states of consciousness.
When you have ‘I’ Consciousness and thoughts, you are in the waking state, the state in which you are right now. In this state, ‘I’ has more frequency than your thoughts. So you can control your thoughts.
When you are without ‘I’ consciousness but having thoughts, you are in the dream state. In the dream state, your thoughts are at a higher frequency than your ‘I’ consciousness. That is why you have thoughts in your dreams but you are not able to control them.
When you are without ‘I’ Consciousness and not having any thoughts, you are in the deep sleep state. Normally, we are aware of only these three states of waking, dream and deep sleep.
The fourth state is where you have I consciousness but no thoughts or turiya.
Intensity means being intense every moment in whatever you do. So first you need to be aware of yourself in all the states. Then only you can be intense throughout.
Now you experience who you are with awareness only during the waking state. You feel, ‘I am a doctor,’ ‘I am a lawyer,’ ‘I am an engineer’ and so on. Only if we are aware of the identities that we carry and enjoy in all the three states, we have caught the thread, the center line of all the three states of waking, dream and deep sleep. When we catch the thread of all these three states, suddenly we realize our identity in all the three states.
Somebody asked me, ‘I don’t think that in the deep sleep state I am aware.’ Then who is the person who comes back and says it was deep peace during my deep sleep? Who is the person who is reminiscing about it saying, ‘It was filled with darkness. It was as if I was not there at all’? Who is coming back and remembering even this idea, ‘I was not there at all’? If the person is not there in that state, then who is coming back to connect all these three states? No, we cannot say we were not there in the deep sleep state. We were there, but we were not aware of the identity that we had in that state.
Understand, a person who is aware of all these three states is conscious. If we are aware of the identity in all these three states, then we are conscious enough, our seeking is intense enough to be answered, we are intense enough to be initiated and blessed. If we are not already aware in all these three states, if we have not experienced all these three states with the same identity, then naturally we need to now intensify our seeking.
An intense seeker will carry the identity about himself throughout all these three states. If even once or twice you have experienced your waking identity in the dream state then you are intense. In the dream state suddenly sometimes you remember that you are beyond the identity which you think as you in the dream state. I have seen seekers going through this experience in the dream state. They will be dreaming and suddenly they will identify themselves with their identity in the waking state. Then they will think about the dream state, ‘Hey, this is too small. This is nothing.’ If you have had the experience of your waking state identity in the dream state, then you have the intensity. Your seeking is intense.
source: Living Enlightenment