You must initially apply your attention to the meditation object, and in order to generate access concentration, you must sustain your attention on the meditation object. Then to move toward the first jhāna, you must initially find a pleasant sensation and apply your attention to it, and then you sustain your attention on that pleasant sensation until the pīti and sukha arise. Once the pīti and sukha arise, you once again apply and sustain your attention, this time on the pīti-sukha experience.
