Happy Easter, everyone.
"A prayer of spiritual Communion with Jesus can be made in a matter of seconds and repeated often throughout the day. The prayer is highly thought of by the Church since it is indulgenced (see Manual of Indulgences, 4th Edition, p.51). To make a spiritual communion you can simply say the following prayer in a recollected manner:
“My Jesus, I believe that You are present in the Most Holy Sacrament. I love You above all things, and I desire to receive You into my soul. Since I cannot at this moment receive You sacramentally, come at least spiritually into my heart. I embrace You as if You were already there and unite myself wholly to You. Never permit me to be separated from You“ (From sacredheart.com).
"The prayer of spiritual communion – which may even be made without words in the yearnings of our heart – shows our deep hunger for the Eucharist; it further shows our deep desire to be united to the Eucharistic life of Christ; it shows, as well, our profound love for the Sacrament of Love!
You can make this prayer throughout the day on days when you are unable to attend daily Mass, or you can say the prayer throughout the day as preparation for your next Holy Communion at Mass ... “Saint Francis de Sales resolved to make a spiritual Communion at least every fifteen minutes so that he could link all the events of the day to his reception of the Eucharist at Mass” (7 Secrets of the Eucharist, pp. 85-86). Flynn relates that Saint Maximilian Kolbe also made frequent spiritual Communions (p.86).
... Saint Leonard of Port Maurice, who said:“If you practice the holy exercise of spiritual Communion several times each day, within a month you will see your heart completely changed” (!) (7 Secrets of the Eucharist, pp. 97-98 )
In his book, Jesus our Eucharistic Love, Father Stefano Manelli explains what the effects of a well made spiritual communion may produce. He says, “Spiritual Communion, as St. Thomas Aquinas and St. Alphonsus Liguori teach, produces effects similar to Sacramental Communion, according to the dispositions with which it is made, the greater or less earnestness with which Jesus is desired, and the greater or less love with which Jesus is welcomed and given due attention.”
Two other books which highly recommend this practice of making spiritual Communions are: The Blessed Sacrament by Father Faber (beginning at p. 438 ) and The Blessed Eucharist by Father Muller (Chapter 11). Surely, this practice of making spiritual Communions will draw you closer to the Lord, and make you more desirous of receiving Him sacramentally at Holy Mass.
The practice of spiritual communion secures our life-long love of the Eucharist, for the Eucharist is constantly close to our heart. By this efficacious practice, our hearts are always longing to receive Jesus in the Blessed Sacrament.
Spiritual communion is a great preparation for Holy Communion at Mass.
“Oh Mary, Mother of the Eucharist, please place in our hearts profound gratitude for the Holy Eucharist.”
Taken From: https://catholicstrength.com/2017/09/20/the-efficacious-practice-of-spiritual-communion/