I don't use a mala much, but when I do, I recite on every bead Śāntideva's recollection from the Bodhicaryāvatāra: "My foes will become nothing / My friends will become nothing / I too will become nothing / Likewise all will become nothing."
Now that I think of it, maybe I should up that practice some. Why?
The simple recollection that everything is in the process of going away is sometimes just enough to keep me from setting all manner of ego-centered and hence harmful consequences into motion. Nothing I want to do is that important. No point I want to make in a debate is that decisive.