Why There are so Much Variations in Our Spiritual Experience?

In this Spiritual video, a devotee of Sadhguru asks him a question why his spiritual experience has so many ups and downs why sometimes he slips from the track, Sadhguru answered that your mind and body are accumulated phenomenon if your life is about your spirit then you're spiritual but if it's about mind or body then you're nothing more then material because these are accumulated things, and the things you accumulate can never be yours.
Literally, the meaning of the spiritual process is about your spirit, not about your body or mind, not about the things that you can gather and lose in your life. The mind is there and you are stumbling because somewhere in your mind you don’t know what you’re doing.