The safest and most suitable form of penance seems to be that which causes pain in the flesh but does not penetrate to the bones, that is, which causes suffering but not sickness.
As for joy, as little as one can have of it in this life, experience shows that it is not the idle who possess it, but those who are zealous in the service of God.
If you attach your heart to certain places and occupations, obedience oftentimes places you in some other place that you may not like; to be always cheerful, be always humble and obedient.
It is proper to ask for sorrow with Christ in sorrow, anguish with Christ in anguish, tears and deep grief because of the great affliction Christ endures for me.