In his exit interview, Bob Langert, McDonald's vice president of corporate social responsibility and sustainability recently said "We need to be a more relevant brand to consumers, to your point. And the work of sustainability is going to make us more relevant. Our actions for the future are going to be part of our growth." But how to reshape your business model in order to better deal with the quickly changing demands of society. Here's how to apply the Business Model Canvas and make your business more sustainable using a proven 7-step process approach.