Following good change management practices is essential. This will lead you, as a team, to the right solutions.
Below are a few main steps. I will not explain expansively. You can google change management. Look at the 8-step process as a good overall model that usually can apply to any situation.
But it always starts with defining the problem and then getting buy-in among at least key people that there is a problem and most of all, among this group, to assure a sense of urgency in fixing the problem as a team. How soon and extensively you communicate to all the people in the organization depends a lot on your current culture. But as a minimum, this central group needs to work with you to develop a new vision for the future, and to communicate this vision throughout the organization, again working to get everyone ready to work in the same direction and achieving buy-in. These communication steps are critical in any organization to be successful in the long term.
But the most critical step is to generate short-term wins along the way. This builds confidence among the people that the new goals are the correct direction and that if they work hard at meeting them, they will see these wins continue, eventually reaching the longer term goals.