I think the book or series is from the late 70s early 80s. It's based in the future; the character was born in a desolate world and grew up with an almost animalistic survivability. It was not by L.E. Modesitt. I want to say it had something to do with a binary sun.
The main character was like a troubleshooter. The book may have actually been published late 50s or early 60s. The action was pulp fiction-ish.