Is there an guardian angel following me?

Answer 1

Matthew 18:10: "

"See to it that you do not despise one of these little ones, because I tell you, their angels in heaven always have access to my Father in heaven".

According to the Jehovah's Witnesses, they also believe this.

(see related link)

Answer 2

Your Guardian Angel is an angel who has been assigned specifically to you since the beginning of creation. Most of the Guardian Angels for people are angels of the first rank. You should turn to your Guardian Angel first thing in the morning, and throughout the day, and ask his help constantly. We will not know the name of our Guardian Angel until death, when he will be right at your side to accompany you to the heavenly throne for judgment.

from Modern Catholic Dictionary by John A. Hardon, S.J. Doubleday & Co., Inc. Garden City, NY 1980

Guardian Angel. A celestial spirit assigned by God to watch over each individual during life. This general doctrine of an angel's care for each person is part of the Church's constant tradition, based on Sacred Scripture and the teaching of the Fathers of the Church. The role of the guardian spirit is both to guide and to guard; to guide as a messenger of God's will to our minds, and to guard as an instrument of God's goodness in protecting us from evil. This protection from physical evil insofar as this is useful or necessary to guard the soul from spiritual harm. A feast honoring the guardian angels has been celebrated in October, throughout the universal Church, since the seventeenth century. It now occurs on October 2.