In the Catholic faith who is your helper and guide?

Answer 1

In the Catholic faith the Holy Spirit is our helper and our guide:

from The Catechism of the Catholic Church, second edition, English translation 1994 (Appendix) Holy Spirit: The third divine Person of the Blessed Trinity, the personal love of Father and Son for each other. Also called the Paraclete (Advocate) and Spirit of Truth, the Holy Spirit is at work with the Father and the Son from the beginning to the completion of the divine plan for our salvation.

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735 He, then, gives us the "pledge" or "first fruits" of our inheritance: the very life of the Holy Trinity, which is to love as "God [has] loved us." (1 Jn 4:11-12; cf. Rom 8:23; 2 Cor 1:21.) This love (the "charity" of 1 Cor 13) is the source of the new life in Christ, made possible because we have received "power" from the Holy Spirit. (Acts 1:8; cf. 1 Cor 13.)

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736 By this power of the Spirit, God's children can bear much fruit. He who has grafted us onto the true vine will make us bear "the fruit of the Spirit: . . love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control." (Gal 5:22-23) "We live by the Spirit"; the more we renounce ourselves, the more we "walk by the Spirit. (Gal 5:25; cf. Mt 16:24-26.)

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Through the Holy Spirit we are restored to paradise, led back to the Kingdom of heaven, and adopted as children, given confidence to call God "Father" and to share in Christ's grace, called children of light and given a share in eternal glory. (St. Basil, De Spiritu Sancto, 15, 36: J.P. Migne, ed., Patrologia Graeca {Paris, 1857-1866} 32, 132)