Everyone should watch the channel Not Just Bikes https://www.youtube.com/channel/UC0intLFzLaudFG-xAvUEO-A, by a guy who moved to Holland and learned what makes those transformations possible, in my opinion.
The videos are short, informative, engaging, and thought-provoking. Hopefully action-provoking too, since my country, the USA, can use a lot of that change. People here act like it's impossible, but they thought so there too. It's possible and role models help.