1. The duty to attend Mass on Sundays and Holy Days of Obligation and to keep those days holy by avoiding any work or duties which may compromise the sanctity of the day.
2. The duty to confess our sins at least once a year.
3. To humbly receive the Eucharist at least once during the Easter season (that is, some time between Palm Sunday and Trinity Sunday).
4. To observe the prescribed days of fasting and abstinence (we are required to fast on Ash Wednesday and Good Friday, and to abstain from meat on the Fridays during Lent.