The Traveler, Book 1 by Deborah Dugan

Humans have always assumed First Contact would come about in one of two ways – extraterrestrials come to Earth, or humans go into space. But what if they were wrong?
Tristan was a no-nonsense structural engineer who took the world for granted. Giving little to nothing of himself, he was often kept at a distance. Not that he cared. At least, he hadn't minded before meeting – the Traveler. Tristan will have some hard lessons to learn and possibly a few inner demons to conquer. But will he be able to step outside himself and see “the other” as they truly are?

As old as the galaxies themselves, the Traveler has taken on many bodily forms. For every first contact, it becomes increasingly more intricate than the last and equally as dangerous. With every encounter, the Traveler moves toward greater knowledge and power, but more often than not, it is filled with anguish and despair; however, every once in a while, a chance meeting comes along and brings the undeniable pleasures of joy and love.

This isn't your typical sci-fi story. As you turn the pages, be prepared to go on a journey like never before. Jump through time and ride along as the Traveler takes you through one adventure after another in this fantasy-filled voyage.