a) hierarchy is ubiquitous and desired in task groups, which means there is invariably competition for the rewards that come from moving up the ladder;
b) the ability to see the world through another’s point of view is a critical skill for being able to garner influence;
c) success requires ambition, drive and the persistence and resilience to overcome setbacks and to work constantly on weaknesses.
From an article titled "The narcissistic world of the MBA student" By Jeffrey Pfeffer in FT.com
(see article here: http://www.ft.com/cms/s/2/6470ac1a-e8f9-11df-a1b4-00144feab49a.html#ixzz15Kaa5szW)