I started training for recreational long distance running in my late 40s. This is a good list for any age. What I would add in is - find training programs and follow them. The original article obliquely references this in #1 talking about "acknowledging reality is critical". At any age, people need to learn how to work, out and how to train. Failing to do so can cause short- or -long term injury, which can really set you back. My first attempt at a marathon lead to IT Band issues and severe plantar fasciitis. My second was much smoother, and I was able to complete the marathon at better than target time without injury.

The moral is - part of listening to your body is learning how to train within your age / ability band.