I know various shapes can be used to amplify energy or achieve higher efficiency for reactions that generate energy. Maybe a pyramidal shape can do that but I don’t know of any applications or papers detailing where pyramid shapes are used for focusing or amplifying energy. I do however believe in the power of the mind to heal or cause maladies. I am glad that you had a positive experience from pyramids though. My wife is into crystals. She believes they have various properties and she is one of the happiest people I know. I think it is her belief though and not the crystals but I am wrong many times a day.