I too struggle with those empty feelings sometimes…but try to remember that faith has nothing to do with feelings…no where in the Catechism…does it speak of faith and feelings…recommend CCC # 166-175…the “in brief” summary is below.
C.S. Lewis’ prescription for Love…also works for Faith…
“Do not waste time bothering whether you “love” your neighbor; act as if you did. As soon as we do this we** find one of the great secrets**. When you are behaving as if you loved someone you will presently come to love him.”
For me…the easiest way to “act” as if my faith is alive and vibrant…is to act…to do the things…as if I “felt”… it was alive and vibrant…this is especially true and immediate …by joining in as much as I can with The Church…liturgies (Mass, Life of Saint on Feast/Memorial, Divine Office, Confession…if a Baptism is occurring…I go sit in the back…out of the family/guest area…and pray the sacrament prayers and think about the infinite invisible reality…the action of Christ and the Holy Spirit in this Sacrament)…devotions (Adoration, Rosary, Divine Mercy, praying for those who will die this day…this night…praying for Souls in Purgatory…etc)…Catholicity – Universality–(read something of Pope B-XVI…recent homily, Audience message, monthly intentions, news of Church especially in far away places…to connect (outside of Liturgies) to the Universal Body of Christ especially where the Church is suffering…members of The Body are really suffering…persecuted…dying)….Priority for the least among us (make a charitable donation online to a favorite charity)…Fasting (quickens my sorrow for my sins and quickens my heart for those who are least among us). All this makes my “self-type-feelings” very small and explodes my “The Other & others-type- feelings”…
C.S. Lewis’ formula….act as if you do…you will then come to be…what your actions profess……always…and I mean always…this works for me…in both Love and Faith…but only…because/with/in…the graces of God…in the Holy Spirit…through Our Lord Jesus Christ…to/for…the Glory of The Father.
For your consideration,
176 Faith is a personal adherence of the whole man to God who reveals himself. It involves an assent of the intellect and will to the self-revelation God has made through his deeds and words.
177 “To believe” has thus a twofold reference: to the person, and to the truth: to the truth, by trust in the person who bears witness to it.
178 We must believe in no one but God: the Father, the Son and the Holy Spirit.
179 Faith is a supernatural gift from God. In order to believe, man needs the interior helps of the Holy Spirit.
180 "Believing" is a human act, conscious and free, corresponding to the dignity of the human person.
181 "Believing" is an ecclesial act. The Church’s faith precedes, engenders, supports and nourishes our faith. The Church is the mother of all believers. “No one can have God as Father who does not have the Church as Mother” (St. Cyprian, De unit. 6: PL 4, 519).
182 We believe all “that which is contained in the word of God, written or handed down, and which the Church proposes for belief as divinely revealed” (Paul VI, CPG § 20).
183 Faith is necessary for salvation. The Lord himself affirms: “He who believes and is baptized will be saved; but he who does not believe will be condemned” (Mk 16:16).
184 “Faith is a foretaste of the knowledge that will make us blessed in the life to come” (St. Thomas Aquinas. Comp. theol. 1, 2).