NEW ORLEANS – Pelicans rookie Zion Williamson credits his mother’s wisdom with helping him manage life’s unanticipated twists and inevitable assortment of successes and setbacks.It has served the NBA’s top overall draft choice well during a highly unusual debut season that has gone nothing like he imagined, yet still holds plenty of promise.“The last 12 months have been a different experience,” Williamson said Thursday, projecting his typically affable, smiling, easy-going manner during a video conference at the New Orleans Pelicans’ practice headquarters. “My mom tells me, ‘Life is life.