The realization of emerging emotions by cultivating mindfulness. I mean this is basically also what various practices/exercises in (Zen) Buddhism aim at. But I'd argue that the practical methodology advertised by Stoicism is too ratio based to be effective beyond a basic . I would rather put my money on more indirect approaches like classic mindfulness exercises and meditation. They are less goal oriented by design, but the axiom (which I accept from experience and observation) is that a healthy mind will be expressing stoic virtues naturally without knowing how to call it.