Feeling better

A week ago, Justin came down with a cold and for the last week, you could tell that he was just not himself. He wasn't the usual happy-go-lucky kid that he usually is. By last Friday though his real personality was starting to emerge. Over the weekend, he was back to normal. His scrunched-up nose smile that melts my heart everytime I see it. How he has to give everyone in the house a hug and kiss before he goes to bed every night. Can I keep him at this age?