if they can't do it on their own, and also assuming their aversion to introspection extends to psychologists too... well, if they ever express a desire to try psychadelics do encourage them. if there's one thing that can force you to look in, it's that. but let me reiterate - encourage them if they independently come up with the idea, don't drug them (obviously), don't push them towards it, make sure they are able to give informed consent to trying

You can't force anyone to learn anything. They have to be receptive.