Autobiography? Somehow, I don't picture Jim Kirk writing a book about himself.
From the forward of the TMP novelization (Gene Roddenberry writing as Kirk, circa 2274):
"...our five-year mission was so well documented, due to an ill-conceived notion by Starfleet that the return of the U.S.S. Enterprise merited public notice. Unfortunately, Starfleet’s enthusiasm affected even those who chronicled our adventures, and we were all painted somewhat larger than life, especially myself.
Eventually, I found that I had been fictionalized into some sort of 'modern Ulysses' and it has been painful to see my command decisions of those years so widely applauded, whereas the plain facts are that ninety-four of our crew met violent deaths during those years—and many of them would still be alive if I had acted either more quickly or more wisely.
Nor have I been as foolishly courageous as depicted. I have never happily invited injury; I have disliked in the extreme every duty circumstance which has required me to risk my life. But there appears to be something in the nature of depicters of popular events which leads them into the habit of exaggeration. As a result, I became determined that if I ever again found myself involved in an affair attracting public attention, I would insist that some way be found to tell the story more accurately."
This, of course, was written well before Khan/Genesis/Whaleprobe and the Khitomer incident. I could see a full autobiography by Kirk, written between the latter event and the Enterprise-B tragedy, as an extension of that effort to set the story straight and deconstruct the legend somewhat (especially, as Christopher notes, for any Academy cadets who might try to follow in his footsteps). Am I right, Mr. Goodman?
Definitely my intent, and please call me David!