The 9 days Novena to the Sacred Heart has started on 6th June. Besides these devotions and this prayer, I have also found a day-to-day novena prayer here. The month of June is dedicated to the Sacred Heart of Jesus, so I recommend daily devotion to the Sacred Heart of Jesus.
Also not forgetting that on the same day, 15th June, is the World Day of Prayer for Priests. Please pray for our priests! They need God's blessings, guidance, strength and grace to go through difficult moments as they serve God's people.
Some of the prayers I mentioned above are said for special intentions. So I searched up the Internet and found this one, a prayer of preparation for the Feast of Sacred Heart:
O most holy Heart of Jesus, fountain of every blessing, I adore Thee, I love Thee and with a lively sorrow for my sins, I offer Thee this poor heart of mine. Make me humble, patient, pure and wholly obedient to Thy will. Grant, good Jesus, that I may live in Thee and for Thee. Protect me in the midst of danger; comfort me in my afflictions; give me health of body, assistance in my temporal needs, Thy blessing on all that I do, and the grace of a holy death. Within Thy Heart I place my every care. In every need let me come to Thee with humble trust saying, Heart of Jesus help me.
"Let us remember that the Heart of Jesus has called us not only for our own sanctification, but also for that of other souls. He wants to be helped in the salvation of souls." - St. Padre Pio