Over the years, teams have found that some practices reinforce the others. The original twelve practices for XP comprise:
This can enable fully eliminating the risks you often face in software development. While it is possible to implement these practices in isolation, many teams have found that some practices reinforce the others and should be done in conjunction. The core of XP is an interconnected set of software development practices. This can include speaking up against what does not work and anything that affects the project’s effectiveness, or accept feedback and improve methodologies. Courage: XP endorses courage at all levels.Respect: The team must respect each other both personally and professionally, to achieve goals.
This helps the team identify room for improvement and revise practices.