Dunno about changing my life the most, but this is what comes to mind, because it helped me accept my mortality:
The Dalai Lama’s Book of Wisdom[0] includes a page on the practice of considering each day a number of ways (eight, here) a person might die, towards dying with more grace when the time comes. I started practicing and found it an engaging creative exercise. It’s also helped me take better care of other living things, and to see non-human animals as people, too. I’m still part of numerous kill-chains (weeding the garden, turning the compost, walking, using electricity, eating plants and animals, paying U.S. taxes and benefiting from the infrastructure, and so many more), and I accept that as part of living.
The Dalai Lama’s Book of Wisdom[0] includes a page on the practice of considering each day a number of ways (eight, here) a person might die, towards dying with more grace when the time comes. I started practicing and found it an engaging creative exercise. It’s also helped me take better care of other living things, and to see non-human animals as people, too. I’m still part of numerous kill-chains (weeding the garden, turning the compost, walking, using electricity, eating plants and animals, paying U.S. taxes and benefiting from the infrastructure, and so many more), and I accept that as part of living.
[0] https://www.worldcat.org/title/dalai-lamas-book-of-wisdom/oc...