James Middleton “pushed” his sister Catherine, Princess of Wales away during his mental health struggles. The 37-year-old entrepreneur – whose late dog Ella became his “reason to get up in the morning” in the years that he was at his lowest – was on the edge of taking his own life in years gone by but refused to even answer the phone to the royal, 42, or the rest of his family. Writing in his memoir ‘Meet Ella: The Dog Who Saved My Life’ he said: “I contemplate ways of dying so I can get off the giddy roller-coaster that is sending me to the brink of madness. I cannot sleep because my mind is …