Prince Harry opened up about the denial he experienced about his mom Princess Diana's death when he was 12, sharing how, even years after watching her burial, some part of him believed she would come back. The Duke of Sussex, 42, teamed up with neuroscientist Dr. Mary-Frances O’Connor for a MasterClass on redefining grief, speaking on his years of feeling numb and unable to process the immense tragedy. "[I] literally felt like I was suffocating, and I would be experiencing panic attacks just in the car on the way to work," he said. "I felt like I had to be sad and I had to be emotionally numb in order to prove to her that I missed her." 📸 : Getty #princeharry #princessdiana