When I see tidbits of advice like this, that I agree that people need to do as they grow up but that I haven't done yet, I add them to a 300+ item list on the to-do checklist app on my phone, and then inevitably forget about it. I've had this list on the app since maybe even high school.
Occasionally, I remember to open up the list. Every time I do, there are at least a few things I can check off, which I had done just as part of life without even thinking about the list. It feels nice.