As you say, it is essential to transition to a sustainable civilization. If we are going to have enough to live on without destroying our environment, we need sustainability. Now the question is how. For this to happen, there are three points that are necessary.
First, we need to be educated on what sustainability really is. Without this education, we might go down a path that is not sustainable. Moreover, certain ideas of sustainability are better than others. So, we should educate ourselves on what is best.
Second, we need to incentivize. To be completely honest, without changes in laws, we probably will not get there by the goodness of people's heart. Tax breaks and other programs need to be in place.
Third, we need to do something about powerful lobbyists that only seek corporate benefits. Some changes need to take place on the level of the government.