As a manager, it turns out that finding ways to get the most out of your  team is not the only thing that you have to use your manager skills to  do when you are at work. 

Every day when you go into work you are really riding off to battle.  It turns out that your performance is always being measured against the  people that you work with. Eventually somebody is going to get  promoted, get a raise, or get a bonus. Will it be you or someone else?  This is something that none of us have any manager training on how to  deal with. 

Welcome to the real world: your co-worker is your top  competitor.