hey, i've done a few courses in science communication, which basically just teaches you how to emotionally manipulate people into believing science, and OP is spot on here!! a few extra summary points i want to highlight because people tend to overlook them but they’re so, so important when you’re discussing things like this:
there are two major types of understanding: facts and belief. facts have no emotional connection to them, things like “the sun is exactly this wide across” or “there are 47 species of frog in my local area”. if someone tells you different and gives you a source as to why on a fact, you’re very likely to just go “huh” and change your mind. however-
almost all knowledge the average person has on complex topics is held as a belief. beliefs are primarily emotional, and usually get applied to complex systems like big social issues. they’re very strongly linked to our morality systems and sense of right and wrong. this can be a problem, because-
it is physically and mentally impossible to force someone to change a belief. (short of like, violent brainwashing). if you hit a belief with contradicting facts, you make it stronger. if you attack someone for having it, you make it stronger. beliefs intensify every time the person holding them feels under threat and that includes lecturing or yelling. interestingly, this is probably why mormons send their young people out on missions. the rejection they get from people forces them to strengthen ties with the church.
so how do you change a belief? here are a couple of tips! for proof of concept, i once used this method to convince my uncle climate change was real.
don’t hit facts with facts. hit feelings with feelings. the person you’re talking to holds this belief because of an emotional connection. identify it, acknowledge it (and if you can, explain how you used to/still do hold the same values), and then present YOUR emotional link to the other side of the argument.
tell a story. don’t tell them how to feel. tell them how YOU feel. in OP’s example, they might talk about how much they loved their car, but how that changed when they gave it up, and how they see things now. give an anecdote that explains your point; maybe a day you caught the bus and a friend drove to the same place, and you got there first, or a day you read an amazing book on public transport, or how you found a great new coffee place while cycling to work.
ask them, gently, to think about it, and leave them with some resources. you can’t change someone’s mind in a day. just like OP says, you gotta wait for things to click. this won’t always happen right away or even on the first try, and you have to reach critical thought mass before they start to feel lectured/condescended to. give them some resources and encourage them to read up on your topic, or to ask you if they’ve got any questions. letting people come to their own conclusions WITHOUT being told what to think is the most surefire way to reforge belief.
(terrifyingly, this is also exactly how QAnon works - they tell you to “do your own research” and then flood search engines with fake anecdotes. if someone’s trying to reset your beliefs, always check where the resources they’re giving you come from.)
that’s literally it. be kind to people, tell them stories, and give them a book or a video to go on with. don’t get impatient, and don’t get mad if it doesn’t work. the fact that no one on the left knows how to do this is why we’re such a fucking trainwreck 99% of the time. also case in point why cancel culture literally creates bigots.