Rachel Joyce said this quote

Harold believed his journey was truly beginning. He had thought it started the moment he decided to walk to Berwick, but he saw now that he had been naïve. Beginnings could happen more than once, or in different ways. You could think you were starting something afresh, when actually what you were doing was carrying on as before. He had faced his shortcomings and overcame them, and so the real business of walking was happening only now.