The attitude of the organization starts with the leadership within, but can be impacted by any member of the team. As leaders we must always remain cognizant of how our attitude impacts the culture and the individuals we work with. Additionally, we must pay attention to the attitudes of others and the impact they have on the organization. People do not realize the impact their negativity can have (Good team members never want to harm the organization). Once made aware they usually realize that they do not understand all the factors and/or that their stance needs an adjustment.
For an organization to succeed, the team must believe in the goals and the current execution path whole heartedly. If the belief is not there, then there is likely an attitude problem. Otherwise, there is something larger and fundamental that needs to be corrected right away.