The person who diagnoses your illness is often not the same person who cures your illness - often there are three people, a GP, a specialist and a surgeon.

Until people are convinced there is a huge problem, they won't accept any solution that has any cost to them.

Also, I hate to say it, but there won't be a non-violent solution. The people who control our world and are driving it into the ground aren't going to accept a tap on the shoulder and a hint that they should step away from the wheel. Which means that people need to get good and enraged before change will really happen.