Undoubtedly angels often guard us from accidents and harm, from temptation and sin. They may properly be spoken of as guardian angels. Many people have borne and may bear testimony to the guidance and protection that they have received from sources beyond their natural vision. Without the help that we receive from the constant presence of the Holy Spirit, and from possible holy angels, the difficulties of life would be greatly multiplied.
The common belief, however, that to every person born into the world is assigned a guardian angel to be with that person constantly, is not supported by available evidence. … An angel may be a guardian angel though he come only as assigned to give us special help. In fact, the constant presence of the Holy Spirit would seem to make such a constant, angelic companionship unnecessary.
So, until further knowledge is obtained, we may say that angels may be sent to guard us according to our need; but we cannot say with certainty that there is a special guardian angel, to be with every person constantly.
Elder John A. Widtsoe, Improvement Era, April 1944, p. 225.
This basically shoots down the traditional idea of a guardian angel for each person. There are angels, and they do occasionally "guard" us from temptation or harm, but it seems unlikely that any person needs so much help that they have a specific angel with them constantly, and if they already have the presence of the Holy Spirit, the presence of a guardian angel is especially superfluous.
However, this got me thinking: If the Holy Ghost essentially replaces a guardian angel, filling the role of a guardian angel, could the Holy Ghost be considered a guardian angel Himself? The Bible Dictionary says this:
We learn from latter-day revelation that there are two classes of heavenly beings who minister for the Lord: those who are spirits and those who have bodies of flesh and bone. Spirits are those beings who either have not yet obtained a body of flesh and bone (unembodied) or who have once had a mortal body and have died and are awaiting the Resurrection (disembodied). Ordinarily the word angel means those ministering persons who have a body of flesh and bone, being either resurrected from the dead (reembodied), or else translated, as were Enoch, Elijah, etc.
Bible Dictionary, Angel
So, no. The Holy Ghost is probably not considered an "angel."
Well... bummer. I was kinda hoping that we each had a guardian angel, but I suppose the Holy Ghost is close enough in every case but terminology. Though I could have hoped for more individualization. I'd love for there to be some being out there who's my guardian angel, whose purpose it is to watch over and guide me. With the Holy Ghost being everyone's guardian angel (if he can be called a guardian angel at all), it somehow makes the relationship between us and Him less special. At least, to me it does. "Yeah, I helped you out, but I do that for everybody."
Maybe I'm just being selfish. The Holy Ghost gives me everything I'd need in a guardian angel, and that should be enough, but I'd also love the opportunity to form a special one-on-one relationship with some kind of guardian angel, someone specific that I could ask for help from and do favors for in return. Someone I could team up with and form a partnership for accomplishing mutual goals. I could probably form that kind of relationship with the Holy Ghost, but to me, He has always seemed like more of a conscience or some kind of energy force than an individual. Can a person become friends with an unembodied energy force?
Theoretically, I could, but first I'd have to get past my racism, or whatever you'd call it, to accept the Holy Ghost as an individual rather than just an extension of my conscience. I understand that God and Jesus Christ are both individuals. Perhaps I need to learn more about who the Spirit is as a person. What's His personality like? What are some of the things He likes or dislikes? Does He have any hobbies or special talents? What is it that makes Him a unique individual, different from every other being in existence? I suppose I'd learn those kinds of things as I work the form a relationship with Him. But still, it seems to me that it'd be rather odd to form a friendship with a Spirit. Somehow, it seems more natural to be friends with an angel instead.