First of all, you are also implying that Fr Larry Richards in the referenced
video is also “wrong” and overstepping Church teaching - for his opinions are much more severe or “burdensome” than mine in this thread.
From the Catechism of the Catholic Church, under The First Commandment:
From:
*A comprehensive examination of conscience based on twelve virtues, by REV. DONALD F. MILLER, C.SS.R., Imprimatur: Joseph E. Ritter St. Louis, April 7, 1959
*
Under Mortal Sins
- Have I neglected saying any prayer whatsoever for as long as a month at a time?
The mistake that some here made was to forget that there is Natural Law which precedes Church Law. It is God who commands us to pray, as revealed in the Bible, not just the Church.