As humans, all of us have Guardian Angels. However, according to the Catechism of the Catholic Church (CCC 336): “From its beginning until death, human life is surrounded by their watchful care and intercession. And beside every believer there’s an angel who serves as protector and shepherd leading him to life.”
Although, here on earth the Christians shares in the blessed company of angels and men are united in God only by faith.
There is also Scriptural basis for this as well: For Psalm 91:9-12 says “Because you have made the Lord your refuge, the Most High your habitation, no evil shall befall you, no scourge come near your tent. For he will keep his angels in charge of you to guard you in all your ways. On their hands they will bear you up, lest you dash your foot against a stone”.
Also, the Gospel of Matthew explained further in (Matthew 18:1-4, 10), “At that time the disciples came to Jesus, saying, Who is the greatest in the kingdom of heaven? And calling to him a child, he put him in the midst of them, and said, Truly, I say to you, unless you turn and become like children, you will never enter the kingdom of heaven. Because, whoever humbles himself like this child, he is the greatest in the kingdom of heaven, See that you do not despise one of these little ones; for I tell you that in heaven THEIR ANGELS always behold the face of my Father who is in heaven.
Also, according to (Tobit 12:12, Revelation 5:8 and 8:3) says, Our Guardian Angels love us and do everything within God’s Will to protect us from harm. Sometimes though we reject God’s protection, and by consequence theirs, when we reject God and we have to deal with the consequences of our sins when we do not repent.
Our Guardian Angels, along with the Archangels and the other Angels, do intercede for us in prayer.
Though, through intercession, even the Seven Archangels can come to our aid and so, we are encouraged to ask for their intercession and guidance. Saying a prayer to the Angels and the Saints must never be confused with worshiping of them.
Because oftentimes, this is a mistake that Protestant Christians make because in their minds, prayer is only a form of worship for them.
According to Catholics and Orthodox Christians, prayer to the Angels and the Saints is only to ask for their intercession to God ( just as we ask any other believer in the church to also pray for us), for their protection by the means of the Grace of God that works through them, and for guidance as we try to emulate their examples.
N/B: WORSHIP OF THE ANGELS AND THE SAINTS IS FORBIDDEN BY THE CATHOLIC CHURCH!
For those who accuse us of worshipping the Angels and the Saints do not understand this and therefore, they accuse us of idolatry and being polytheistic (the belief in many deities) rather than to be monotheistic (the belief in only one God).
Consistently, we need to be very careful of this because there are some superstitious Catholics who do fall into this trap that Protestants actually accuse us of.
Nonetheless, we should try to develop a personal devotions to the Angels and Saints, specifically to the Archangels. We should also ask for their intercession and for their help in times of trial and of happiness. Finally, we should also try to emulate their example and their service to God.