Gabriel Garcia Marquez, a renowned Colombian writer and Nobel laureate, has retired from public life due to terminal cancer. He sent a farewell letter to friends expressing his regret and sharing lessons he has learned. Some of the lessons include appreciating each moment as if it were your last, expressing love to friends and family daily, and forgiving others and saying "I'm sorry" while you have the chance. He encourages recipients to tell loved ones how much they are cared for before opportunities to do so pass forever.