Martin Fowler on Agile
Quote: "The first step is to find suitable projects to try agile methods out with. Since agile methods are so fundamentally people-oriented, it's essential that you start with a team that wants to try and work in an agile way. Not just is a reluctant team more difficult to work with, imposing agile methods on reluctant people is fundamentally at odds with the whole notion of agile development."
That means, if you don’t like your teammate, don’t bother going agile. You will not succeed unless you make not going agile to your teammate be a career limiting move. :)