The best organizations reward not just outstanding individual contributors, but people who also contribute to the organization as a whole, to the team, to shared goals and values.

There are, of course, a lot of takers who are good fakers - people who will pretend to contribute to organization but really want everything for themselves.

To avoid being taken advantage of by them, you should build boundaries and learn to say No, as well as to cultivate your own value which you want to protect from others.