whenever you are in need of a doctor or medicine. remind yourself that the medicine & doctor is %100 FAKE & only hashem can save you cause that is the pure truth & they are only the messengers of Hashem.
every kind of sickness has a mida k’neged mida for a sin a person did. i.e. a lisp can come from someone that talks to much with hashem begging the person to be silent & not make Hashem make his tongue shorter each time until he goes mute C”V (this doesn’t mean that every person that has a lisp talks too much)
SO when any sickness approaches a person C”V stop immediately & make a cheshbon Hanefesh by asking yourself why would Hashem do this to me? what is Hashem trying to tell me? what sin do I need to remove from my life & do teshuva?
mild edit. Possibly too mild
upon ending:
when a PUBLIC tragedy occurs to klal yisroel C”V then EVERYONE is supposed to make a public cheshbon hanefesh & ask what is hashems wake-up message for this tragedy occurring & what do we need to do so it never happens again