Corporate Life.
It's amazing to work with the colleagues who understand you and your working style. This thing motivated you , increase your potential and make you perform well at your desk.
At other hand working with colleagues who never understood your working style and they hate you, doesn’t like your attitude towards work or dedication to organisation. These kinda people gave you real challenge to prove them wrong, this kind of environment or Office culture might be dangerous and you quit your job, but if you work hard and sustain your responsibilities towards work, make your actions as per situations demand.
This is the time when you could be a leader or a looser. Because no one is born leader or looser it's the situation and the abilities to tackle them only that thing prove whether you are a leader or looser.