Meditations 5.20 is usually read as a pep talk. In context Marcus Aurelius was writing about people who obstruct you, and the method he gives is reservation and conversion.
Almost every philosophy that survives seventeen centuries is a philosophy of addition. Learn more, earn more, become more. Plotinus taught the opposite.
Marcus Aurelius wrote Meditations as private notes to himself, never intended for publication, while running an empire and burying children and fighting wars he didn’t choose.