QoS, it's possible you and Queen PurpleMoons share similar energy. I always find the energy of Empaths interesting. But that's something worth looking into.
There are ways to develop your gifts so that you don't "depress" yourself. When psychics do readings over the phone, even they have to protect themselves in certain ways from the energy of the people they read. It's very easy for them to become "infected" with energy from people because of the nature of those readings that also have an empathic quality to them. Talismans are often used by working Psychics, worn around the neck to protect against invading spirits.
Since the pyramids are energy generators, there is no doubt that your stone has a strong frequency still resonating in it. It might be worth it to take the stone to a spiritualists or Psychic, those who do readings on objects, jewelry etc. I say this because you might want to preserve the energy of the stone, or you may not. It depends what kind of energy is in there.
Or, you can learn to read it that energy yourself, simply by spending quality time with it. If you hold the stone in the left hand, close your eye and visualize electricity or a form of energy flowing from the stone and into your heart. Do this in the morning, at least once. Leave the stone alone from there and go about your business. Note how you feel during the day. You may not feel anything difference at all, but repeat this process everyday until you are clear about the energy inside this stone. It might make you feel powerful or it might not.
Using a stone like this one as a Talisman is worth some serious meditation on your end. It's up to you. You already know this was once part of a pyramid. What we don't realize is that pyramid were use and perhaps still are used to open up astral portals to different places in the Universes and Earth. A piece of that technology is with you now.
If you can command that energy properly you're fine. But if not, you should clear it out. I'm wonder if energy like that could be cleared at all? That is something worth investigating too.
But let's say you enjoy the energy of your stone, be clear about what you will potentially used for. Create some type of spell, prayer or any group of affirmations that form your intent for using it. The technique Bro. Darkside has mentioned will work well in this area. Bro. BlackBird also has great tips about charging up objects.
You don't have to suppress your dreams anymore, it's now the age to understand them, grow from them and become empowered because of them.