Horsesense Hank in the Parallel Worlds by Nelson S. Bond

It's funny how, in moments of stress, dejection, or great elation, your mind will focus upon some tiny, relatively unimportant point.

I should have been whooping with joy to look upon a set of familiar faces, even though those faces were our own. But do you know, my first conscious reaction was one of rage? And why? Because, naturally, the first guy I looked at was myself -- and there I was, sitting in that other ship, calmly munching on a great big rosy apple!