If we want change we need a few things...
1. Be open to making real personal changes ourselves. Not just going with the flow and waiting on policy makers. We have individual choices we can make.
2. Look at all the things having an impact. Including the uncomfortable ones. The food supply chain is the one I've most recently become aware of. Take personal action on areas and support policy makers in pushing for changes. They need support because some things are hard (as in making the change means they won't be re-elected)
3. Learn the details. There is a lot of hogwash being thrown around. We should know the details and be able to speak well with people about them. In a persuasive way.
4. Understand people. For example, the #1 cause of death in the US is heart disease. An overwhelming majority of that is based on lifestyle. Most people just ignore future consequences compared to immediate feelings. Expect people to be this way and work with it.