"Competing with others to further one's own professional or social career may bring some rewards, but at a tremendous cost to one's character."
Oh? Can you describe how so? This doesn't jive with my own personal experience, at least not in every case. Can you define the "tremendous cost"?
Certainly not in every case, but the dog-eat-dog world has its drawbacks. It is sad that in the professional world, people often advance by stepping on others.