A: You want to know if it is possible to give permission for an angel to enter your mind...you feel that as long as your will is to do the will of God, that this can only be a good thing...?
Here's the section you asked about:
(113:5.1) Angels do not invade the sanctity of the human mind; they do not manipulate the will of mortals; neither do they directly contact with the indwelling Adjusters. The guardian of destiny influences you in every possible manner consistent with the dignity of your personality; under no circumstances do these angels interfere with the free action of the human will. Neither angels nor any other order of universe personality have power or authority to curtail or abridge the prerogatives of human choosing.
And it also says:
(113:5.4) In the life of the flesh the intelligence of angels is not directly available to mortal men. They are not overlords or directors; they are simply guardians. The seraphim guard you; they do not seek directly to influence you; you must chart your own course, but these angels then act to make the best possible use of the course you have chosen. They do not (ordinarily) arbitrarily intervene in the routine affairs of human life. But when they receive instructions from their superiors to perform some unusual exploit, you may rest assured that these guardians will find some means of carrying out these mandates. They do not, therefore, intrude into the picture of human drama except in emergencies and then usually on the direct orders of their superiors. They are the beings who are going to follow you for many an age, and they are thus receiving an introduction to their future work and personality association.
In the previous section we read this:
(113:4.1) The guardian seraphim are not mind, though they do spring from the same source that also gives origin to mortal mind, the Creative Spirit. Seraphim are mind stimulators; they continually seek to promote circle-making decisions in human mind. They do this, not as does the Adjuster, operating from within and through the soul, but rather from the outside inward, working through the social, ethical, and moral environment of human beings...
(113:4.3) Seraphim function as teachers of men by guiding the footsteps of the human personality into paths of new and progressive experiences. To accept the guidance of a seraphim rarely means attaining a life of ease. In following this leading you are sure to encounter, and if you have the courage, to traverse, the rugged hills of moral choosing and spiritual progress.
So, I guess it really is not possible to do what you're asking. The angels' intelligence in our minds is not available to us just by asking—only their guardianship. They answer to far higher authorities insofar as their duties to humans. It might seem like it would be easier to have the Seraphic Guardian's influence to help us in our decision-making, but this passage tells us that we have to chart our own course...with only the ever-present guidance of the Thought Adjuster. I guess we'll have to be content to know that they are close to us, that they guard us, and that they love us.
I am sure that if you make an effort to get closer to, and to understand your angels, they will do all within their circumscribed powers with humans to help you to progress in all ways possible. But as we read above, this "rarely means attaining a life of ease." Dedicating our wills to doing the will of God is in itself, a rugged path, but really, it is the path of highest joy and greatest achievement..."