Neurosis - Reifying 'I' & 'Mine'
"From a Buddhist perspective, neurosis refers to our experience of suffering based on a mistaken perception that the 'I' or 'self' is a truly existing, permanent entity. Based on this fundamental misperception, we grasp onto the imagined self, and this clinging, often referred to as ego-clinging - then serves as a basis for the arising of disturbing emotions and karmic actions."
Dzogchen Ponlop. "Wild Awakening. The Heart of Mahamudra & Dzogchen." Shambhala, Boston, 2003.
Again from a Buddhist perspective, the "root cause of dukkha (stress, suffering, misery, unsatisfactoriness, pain) is the delusion, the wrong understanding, that there is 'I' and 'mine'."
Buddhadasa Bhikkhu. "Heartwood of the Bodhi Tree - The Buddha's Teachings on Voidness." Wisdom Publications, 1994. http://www.johnlovas.com/search?q=Buddhadasa