Just because we can't see something doesn't mean it doesn't exist, although this is a common way in which people deny the existence of spirit guides, angels, and other unseen helpers in our lives. However, anyone who has encountered such beings can attest to the fact that they do, indeed, exist, just as our breath exists, keeping us alive, even though we can't see it. The wind exists, too, but we only know this because we feel it on our skin and hear it moving the leaves on the trees. All around us and within us are things we can't see, and yet we know they are just as real as the grass beneath our feet.
What we see and don't see may just be a matter of perspective, like the ladybug who sees the leaf on which she sits, but not the tree the leaf grows on, or the person sitting beneath it. And the person beneath the tree may or may not see the ladybug, depending on where he focuses his attention. Still, all of these things, whether seen or not seen by the person or the ladybug, exist in reality. Some people are more gifted at accessing that which we cannot see, but given an open and willing heart, anyone can tune into the invisible realm and begin to find their way.
Human beings have always done this, and it is only recently that we have fallen into distrusting the existence of what we can't see. If you have lost touch with the unseen world, all you have to do is resolve to open your heart to its existence, and it will make itself known. Closing your eyes in meditation and visualization, or engaging the unseen through the written word, are just two ways to welcome the invisible back into your life. Whatever you choose to do, cultivating a relationship with that which you can't see is a time-honored human practice that can greatly enhance your life.