mind overcoming its cankers

There are cankers to be overcome by
insight, self-control, judicious use, endurance,
avoidance, elimination and development.

If cankers are not overcome,
what should be done is left undone,
but what should not be done is done;
the self important and the heedless,
For them the cankers only increase

For those who earnestly practice
the meditation on the nature of the body,
they do not do what should be not done,
They steadfastly pursue what should be done,
Hence for those mindful and clearly comprehending ones,
the cankers do come to an end.

Having rid of cankers,
like birds in the air -untraceable leaving no marks,
birth,death and rebirth ceases,
so like the bird free be!

(Dhp.292-3 and Buddharakkhita:2004)