Dystopian mankind discover have mental ability to transition to energy being, negative thoughts hinder moving to next stage

[Robbin]

Read in early 1990’s (blue cover)

Title may have words chronicles or conspiracy in it?

[Kris]

A long shot - Whisper from the Stars by Jeff Sutton? There are different cover images.

Description on Worldcat.org: "An evolutionary advancement in mankind allows the mind to transcend the physical body changing time and altering historical facts. The governmental powers are opposed to this believing that ordinary people are not ready for this type of transformation."
https://www.worldcat.org/title/whispe...

https://www.worldcat.org/advancedsear... > Keyword: transform | Subject: dystopian | 1960-1997 ? | Not juvenile | Fiction | Book | English