Grit the power of passion and perseverance angela duckworth 2016 July 8, 2019 16 32 64 128 Duckworth angela grit the power of passion and perseverance scribner 2016 Duckworth angela 2016 grit the power of passion and perseverance scribner publishing Duckworth angela. grit the power of passion and perseverance. new york scribner 2016
