
Psychic and energetic attacks are quite real, we just call them different things from culture to culture. Most of them may not even be intentional, the unfortunate one just happened to come into contact. I myself have felt them many times. While energy cannot be created nor destroyed, it can be repelled, changed, moved and transformed, and this is the purpose of the charm, amulet or talisman in one sense, which is to reflect the attack away from you and send it either back to the sender, or into the universe to be dealt with. You don't want to absorb it, not even into your protective object, because it will contaminate it. The goal is to knock it back.
The first step is to find an appropriate object, usually a religious or spiritual one that is fitting for you. For example, in the picture at the top, you see my Shield of Athena, which is also the head of Medusa. Granted, this piece is quite large. Yours doesn't have to be. But sometimes, I like to live by the philosophy of, Speak softly, carry a big stick. The talisman can be worn around the neck, or stuffed in a pocket or some sort of carrying bag, like a purse, computer bag, or backpack. You also don't have to be a Hellenist to use a talisman such as mine. Any kind of Pagan can use it if they feel so inclined. Every Pagan religion, however, has its own symbols that can be used for protection or advancement. The Egyptians have the Ankh and the Eye of Horus, the Norse have Thor's hammer, the Celts have their Eternity Knots, and the Romans have the Aquila, to name a few.
Begin by cleansing the talisman with either purified water or sage; both would be superb. You want to knock off or out of it anything dirty that may have been picked up between the time you found it and the time you are preparing to use or "activate" it, if you will. Now the way to charge the object for your intention can be done in one of two ways, or both. You can call on a Deity, infuse it with your own energy, or try to accomplish both the infusion of the Deity's energy and your own, the former being for when your own powers just aren't enough to repel an attack. By attempting to get the Deity's power as well as your own into the object, I think is quite pious and reverent of the Gods, because you are literally acknowledging that you're not a God, and therefore there are somethings you cannot do on your own. For those things, you turn to the acknowledgement of the Higher Powers.
If you wish to only request the assistance of a God upon the object, turn in prayer to the Deity, giving sacrifice. Then, holding the talisman up to the heavens, recite a prayer like this,
O' great God/Goddess (insert name),
upon this talisman (insert name of object),
I request that you bestow your strength,
surge through it your Divine power,
that it may stand guard for me,
in your blessed name,
against all evil and ill that comes against me.
If you wish to simply infuse the object with your own personal energy, hold it in your closed hand and close your eyes, although if you have good visualization and direction, you can do it with your eyes open. Envision and direct energy from your body and mind, moving through your arm, to your hand, and into the object. You should add by reflecting your intent with a certain color for your energy, like red for fire as it repels, and/or green for the earth, as the earth is solid and therefore protects like armor or rock. Charge and infuse the object completely, making your energy stronger and stronger with each surge, until your maximum level of power possible is reached.

To do so, follow the same cleansing and sacrifice format as before, but the prayer for Divine favor upon the object is a bit different.
O' great God Hermes,
as you fly about the world,
pay visit to me, I humbly request,
and anoint with your caduceus this charm,
that it rest upon me always with luck and fortune,
every single day of my life.
And also that Athena be a protector of all things good that follow me.
If using your own energy, follow the same format as before, but this time, make your energy gold and/or orange. Gold for obvious reasons, but orange because the color reflects progression and attainment in life.
On a final note, natural things can also act as cleansers and chargers, such as sun and moonlight, although intentional direction would work best, I would imagine. As for how often you should repeat the cleansing and charging, I'd say whenever you feel it's necessary. But generally speaking, I would do it once a week.
In the Goodness of the Gods,
Chris Aldridge.