Bhagavad Gita, Chapter 14, Verse 13

Darkness, inertness, miscomprehension, and delusion, these arise when Tamas is predominant, O descendant of Kuru.

Negligence and delusion round out this list, real, plain signs that ignorance has taken hold.

Each of the three forces now has its own concrete tell, described in behavior a person can actually notice in themselves. Real self-awareness starts with recognizing these signs directly.