Do we have guardian angels—personal angels who hang out with us and go where we go? I don't know for certain, but I do know that as believers, we have angels in our lives. Every Christian does.
The Bible clearly teaches, "The angel of the Lord encamps all around those who fear Him, and delivers them" (Psalm 34:7). Psalm 91:11 tells us, "For He shall give His angels charge over you, to keep you in all your ways. And Hebrews 1:14 says of angels, "Are they not all ministering spirits sent forth to minister for those who will inherit salvation?" Also in Hebrews, we read that "some have unwittingly entertained angels" (13:2). That is an interesting thought, isn't it? Maybe you have met an angel. If you have, you probably wouldn't know it. I doubt that an angel would tell you he is an angel. (By the way, when we read about angelic appearances in the Bible, angels always appear as males.)
No one can say for certain whether we have guardian angels, but something Jesus said would imply that perhaps children have guardian angels. He said, "Take heed that you do not despise one of these little ones, for I say to you that in Heaven their angels always see the face of My Father who is in heaven" (Matthew 18:10). This is reassuring, knowing how easily children can get themselves into trouble. But even if they don't have a personalized angel, we can know that angels are involved in their lives.
And angels are involved in the lives of Christians. We have angelic activity around us every day. Angels are at work in our lives, protecting us, guiding us, and sometimes even speaking to us. But they work undercover. We could describe them as God's secret agents.