Natalie Flake, a resident of Cleveland, will be making an appearance at Java Joe’s Coffee Shoppe, 1349 Washington St. in Clarkesville to sign copies of her book, “Tears to Joy: Finding Hope in the Presence of Bipolar Disorder and Suicide.” After four years of marriage, Flake’s husband, Michael, had transformed into a different person overnight. Plagued with depression, he struggled to regain his normally cheerful and outgoing personality.