Sheryl Sandberg has opened up about her husband's shock death in an emotional op-ed. The Facebook COO took to the social networking site earlier today to speak for the first time about her tragic loss, following partner Dave Goldberg's untimely death last month. The prominent business was exercising in the gym at a Mexican resort when he fell off a treadmill and sustained a fatal blow to the head. It has since been claimed that a heart arrhythmia may have contributed to the freak accident. Breaking her silence, Sandberg has paid tribute to her 47-year-old husband and shared some of the lessons she had learned from her ordeal. "A childhood friend of mine who is now a rabbi recently told me that the most powerful one-line prayer he has ever read is: “Let me not die while I am still alive.” I would have never understood that prayer before losing Dave. Now I do. I think when tragedy occurs, it presents a choice. "You can give in to the void, the emptiness that fills your heart, your lungs, constricts your ability to think or even breathe. Or you can try to find meaning. These past thirty days, I have spent many of my moments lost in that void. And I know that many future moments will be consumed by the vast emptiness as well. But when I can, I want to choose life and meaning." Sandberg also revealed that she is still struggling to deal with her loss but vowed to continue for the sake of her children Michelle and David. "I was talking to one of these friends about a father-child activity that Dave is not here to do. We came up with a plan to fill in for Dave. I cried to him, “But I want Dave. I want option A.” He put his arm around me and said, “Option A is not available. So let’s just kick the shit out of option B.” "Dave, to honor your memory and raise your children as they deserve to be raised, I promise to do all I can to kick the shit out of option B. And even though sheloshim has ended, I still mourn for option A. I will always mourn for option A. As Bono sang, “There is no end to grief . . . and there is no end to love.” I love you, Dave." You can read her post in full here.