My book consists of a meteorite that gave certain people telepathy/telepathic powers. There are 3 different powers and one of the groups is the strongest. They have telepathic duels to not only hone their powers but determine the strength of their power. It’s set on Earth and only certain people get the power(s). I keep coming back in my mind to the names of each group which are the Kes, Prit and one other, but I may be confusing those names with a Star Trek TNG episode.
So I believe one of the groups wants to be in control rather than the ones who are in control. Battles ensue, mostly Mind battles as one group is weaker in telepathy and stronger in telepathic powers. Interesting story, written by an attorney. This has been killing me since I lost the book over 20 years ago.