At his beach house in the Hamptons, Andy Cohen begins and ends every day with a dip. “The ocean is my absolute therapy,” says the television producer and host, who can otherwise be found lounging in his hot tub or soaking up the sounds of the Atlantic with his kids from the home’s splendid indoor-outdoor rooms. That hard-won sense of serenity has been a long time coming for the endurance entertainer, host of marathon reunion episodes, talk-show interviews, podcasts, and New Year’s Eve specials.