Saint John’s sister, Elizabeth White, was a saintly Dominican nun. While imprisoned in the Tower, he wrote two devotional works for her. One, titled The Ways to Perfect Religion, concluded with seven sentences, each a short prayer intended to be used on successive days of the week. In our consideration of these prayers, we should bear in mind: first, Saint John’s deep reverence for the Holy Name of Jesus, to whom each prayer is addressed; and second, his great devotion to the Daily Office, the official prayer of the Church, which takes into account the liturgical character of each day of the week.
Sunday: O blessed Jesu, make me to love Thee entirely.
Monday: O blessed Jesu, I would fain, but without Thy help I cannot.
Tuesday: O blessed Jesu, let me deeply consider the greatness of Thy love towards me.
Wednesday: O blessed Jesu, give unto me grace heartily to thank Thee for Thy benefits.
Thursday: O blessed Jesu, give me good will to serve Thee and to suffer.
Friday: O sweet Jesu, give me a natural remembrance of Thy Passion.
Saturday: O sweet Jesu, possess my heart, hold and keep it only to Thee.
The website linked above adds meditations to each of those prayers.