Oliver Finds His Way by Phyllis Root, illustrated by Christopher Denise

From chapters.ca:
Oliver is so intent on following a blowing autumn leaf that he doesn't even notice that he's lost his way. All alone at the edge of the woods, he starts to cry. He cries and cries - but he is still lost. And so he rubs his nose and tries to think.... With warmth, humor, and faith in the power of pluck, Phyllis Root quietly captures a big, defining moment in the world of a small child.