Title: Shoe laces. Sentence 1: Trent found it hard to learn how to lace his shoes. Sentence 2: His mother showed him over and over but he didn't grasp it. Sentence 3: He had to practice on his own to eventually understand it. Sentence 4: When he did, he was so happy, he went for a run.
And when his shoelaces were undone, he did them again.