Princess Charlene has made a heartbreaking admission about “feeling isolated”. The Princess of Monaco, 46, has opened up about formerly being an Olympic swimmer and how this impacted the royal in later life. Charlene said: “I walk, I cycle, I swim too, but not as much as before. “I don’t practise swimming as intensely as in the past. “When I was young, I trained very hard, I challenged myself physically. These days, it’s all about moderation.” Reflecting on her ambition and drive that has not dimmed since her professional days, Charlene admitted: “It can be quite difficult because my nature is…