People mainly change because they're tired of the symptoms, to the point that they’re willing to admit to what is actually going on, not because of, for instance:
Rationality or convincing arguments. For most people, ideas are built and rearranged on top of an underlying emotional reality, i.e. they believe what is convenient for their life, what causes minimal cognitive dissonance, not what is true. As a result, it doesn’t matter if you can show that what people believe in is flawed or impossible — like perpetual growth on a finite planet — they will keep looking for evidence or anecdotes to justify their beliefs, because they need them. They haven’t arrived at those beliefs through an inquiry, they have backwards rationalized them.
Foresight of future problems. It is worth noting that this ability is present in mature individuals, and is probably one of the biggest divide between the pleasure-seeking fool and the more experienced wise person.
Personal will. I am not saying that there is no such thing as will, I am rather saying that what is usually conceived of as "will" doesn't actually produce changes. What most people call "will" is in fact self-coercion to address a feeling of shame. But that shame merely creates more internal conflict, which can never lead to any lasting change. In the short term that coercion can be channeled into some productive output, but it will always be met with backlash eventually.
I mention this because despite all my writing about the problems with the system, I do not expect most people to change. It is simply too convenient to numb the problems away. But still, there are conscious individuals and those are worth talking to and building relationships with. Just don’t expect most people to magically change.