If you only remember one thing from Adam Grant’s talk, it should be that it’s, on average, matchers are most successful. This is because, whilst Takers tend to rise quickly in their areas of work, they also are susceptible to falling just as quickly. Givers, on the other hand, tend to be so absorbed into other’s problems that they often tend to suffer on a personal level because of this, unable to complete the work that was assigned to them, due to them being so wrapped up in other problems.
This is because people are, fundamentally, opportunists, and when a giver only gives and refuses to take once in a while, people can, and will, attempt to take advantage of them. However, to truly prosper, a giver must be willing to continue giving, as well as being able to take once in a while.