Reply To: How Do I Know I've Ever Properly Performed Any Mitzvah?

every person should just do their Hishtadlus (buy the pair of tefillin “but also from a reliable sofer) & then you have done your part & if there is a mistake with the pesach matzos you bought the owner of the bakery is the one chayav for you eating chometz C”V not you. his contract includes a promise that all the matzos are kosher for passover etc…