Solution: Selflessness
Thankfully, the solution to this problem, if not easily implemented, is at least simple to understand. Each team member needs to put aside his own interests and work toward the goals of the team.
If you are the selfish teammate, you can solve the problem by focusing on the team’s goals rather than your own.
When someone else is the selfish party, the solution is more difficult. If you can show the person that you care for them and their goals, you may be able to convince the teammate that they do not have to defend their own interests. If they still persist in thinking only of themselves, you may have to gently correct them or even request them to leave the team.
Selfishness must be dealt with quickly because it spreads rapidly