Do you remember the following quotes from Thiaoouba Prophecy book?
"Man exists physically for the sole purpose of developing spiritually..."
"Technology should assist spiritual development, not confine people, more and more, within a materialistic world, as is happening now on your planet."
Spirituality means focusing on the development of "spirit" or Consciousness.
Don't be surprised if you struggle to find a sensible definition of Consciousness (or spirit) because in the current science on Earth there is none.
Consider Consciousness as a system of Information Processing in the Universe. Your own consciousness is a part of this system.
If you try to restrict the context of your consideration to anything less than the entire Universe - you will only reach misleading conclusions.
Try to become aware of properties and features of your own Consciousness and you will see what focusing on them means.
Properties of Consciousness include for example:
Try to find more of properties and features of Consciousness, write them all down, and you will see what development of these features in your own consciousness means to you.
Needles to say, directions of development of your Consciousness should not contradict The Purpose of Existence of the Universe in any way.
More details are in The Freedom of Choice book.