Upajjhatthana Sutta // Thich Nhat Hanh

These Remembrances are found in a sermon of the Buddha called the Upajjhatthana Sutta, which is in the Pali Sutta-pitaka (Anguttara Nikaya 5:57). The Venerable Thich Nhat Hanh also has spoken of them often. A version of the Remembrances is part of the Plum Village chanting liturgy.

The Five Remembrances

1. I am subject to aging. There is no way to avoid aging.
2. I am subject to ill health. There is no way to avoid illness.
3. I am going to die. There is no way to avoid death.
4. Everyone and everything that I love will change, and I will be separated from them.
5. My only true possessions are my actions, and I cannot escape their consequences.

https://www.learnreligions.com/the-five-remembrances-449551