"Moping doesn't solve anything," he snorts. "I feel like shit, but I'm not going to hole up and ignore everything because of it."

No, instead he's going to keep busy by doing menial but helpful tasks. Chopping wood, fixing the furniture he and Sora destroyed, touching up the paint inside. Useful things, but also tedious things. It's purposeful, for in tedium there's a sort of meditation he finds useful. Sometimes just emptiness, sometimes a chance to think ahead.