That little mortification costs you so much! You're in two minds. It's as if some one were saying: why must you be so faithful to your plan of life, to the clock? Listen: have you noticed how easily little children are taken in? They don't want to swallow their medicine, but 'Come', they are told, 'this one spoonful for Daddy, and this one for Granny.' And so on, until they have finished the lot.
Do the same; fifteen minutes more mortification for the souls in purgatory; five more for your parents; another five for your brothers in the apostolate... Until, in the end, the allotted time is up.
Your mortification done in this way... is worth so much!