Teaching
Recurring anger points not to the other person but to an unresolved expectation within you.
Original Text
काम एष क्रोध एष रजोगुणसमुद्भवः
Transliteration: Kāma eṣa krodha eṣa rajoguṇasamudbhavaḥ
Meaning
The Bhagavad Gita describes desire as the root of anger — when desire is blocked, anger arises. By observing what triggers your anger you learn what you still cling to. This recognition is the first step toward releasing the attachment that fuels the fire.
Practical Application
The next time anger arises, ask: what did I expect that did not happen? Write it down. Then ask whether that expectation was reasonable and whether releasing it would cost you something real. Often it costs nothing except pride.
Source
Bhagavad Gita, BG 3.37
Attributed to: Vyasa