Here is a link to the Five Remembrances chant.
The Five Remembrances
I am of the nature to grow old. There is no way to escape growing old.I am of the nature to have ill-health. There is no way to escape having ill-health.
I am of the nature to die. There is no way to escape death.
All that is dear to me and everyone I love are of the nature to change. There is no way to escape being separated from them.
My actions are my only true belongings. I cannot escape the consequences of my actions. My actions are the ground on which I stand.