Spiritual enlightenment is often categorized into levels for practical purposes. The highest stage of spiritual enlightenment marks the attainment of unity with God or being one with everything. But can still there are certain levels through which the individual needs to evolve. In a similar way that man has evolved from more primitive animals, the human conciousiness or soul also evolves. For our practical purpose, put them in stages and analyze the state of being in each stage:
The first stage of spiritual enlightenment
The second stage of spiritual enlightenment
The third stage of spiritual enlightenment
Spiritual enlightenment is the fruit that sets you free, as you lose all wants and wishes to receive the fruits of your actions. You feel the bliss of completeness and true love. At first it gives you the feeling that you need “Light”. At the next stage, you feel that you are merging in “Light”. And in the final stage you and the “Light” are one.