So the take-no-prisoners Lendl may just be what the young Murray needs. In his hey days, the 8-time Grand Slam champion, was famously known for controlling and dominating his matches from start to finish in relentless fashion. Lendl's never-say-quit ruthless work ethics revolutionized the game and ushered in the era of power tennis. He could be just what the doctor ordered for the young Briton to get over the hump.
Lendl's style of play and personality didn't win him too many friends in the media, but at the end of the day, WINNING is what matters and very few players in the history of the game were better than Lendl (146 career titles) at it.
That's the attitude Murray needs.