When the Son is about to meditate, he starts repeating the relative formula, and continues later with a more or less uniform invocation, in which it is only the subject that changes.
In affective meditation one traces an imaginative picture, but not everybody can or must reach a picture of the same type.
Certain souls see everything through some image, and others are unable to make any image.
Sensations are a direct effect of the imaginative picture. Not always it is possible to get intense emotions, and this is not the purpose of the exercise, but one must aim at an emotional-mental state that is gradually purer and higher.
Generally one notices a cut in the exercise when we reach the purposes. Sensibility is increasing its tone until its culmination as a unique emotion, but when one should make the will to continue in certain direction, we lose easily the state of meditation.
Despite recommendations of their Spiritual Directors, certain Sons are not constant in their practical exercises of meditation. Laying aside indolence, which is a common cause of this carelessness, there are other motives leading to abandon the exercise.
If concentration is necessary in every exercise, in meditating on the Resurrection of Hes, you need to achieve a complete abstraction from the environment; there must take place a true surrender to meditation.