By Mark Lamport-Stokes PACIFIC PALISADES, California (Reuters) - Patience and hard work are prized attributes in professional golf and South Africa's Charl Schwartzel relied heavily on both to emerge successfully from the darkest period of his playing career. "In 2014, I was terrible and '15 wasn't the best either," former Masters champion Schwartzel told Reuters after moving into early contention for another title with a three-under-par 68 in the first round of this week's Northern Trust Open. More...