Article continues below advertisementJennie Garth revealed how deeply she struggled to accept the death of her Beverly Hills, 90210 costar Luke Perry. "Losing Luke shook me to my core," Garth, 54, wrote in her memoir, I Choose Me: Chasing Joy, Finding Purpose, and Embracing Reinvention, which hit bookshelves on April 1. "I felt paralyzed, unable and unwilling to speak. It was too big to comprehend, to devastating to accept.