When considering each of the Ten Commandments. Ask yourself if your are doing the following:

I. I am the Lord Your God. You Shall Not Have Strange Gods Before Me. 
 Do I give God time every day in prayer? Do I seek to love Him with my whole heart? Have I denied the existence of God? Have I doubted or denied my faith? Do I seek to surrender myself to God’s Word as taught by the Church? Have I ever received Communion in the state of mortal sin? Have I rejected any Church teaching or denied that I was a Catholic? Does someone or something other than God influence my choices? Have I ever deliberately told a lie in Confession or have I with-held a mortal sin from the priest in Confession?

II. You Shall Not Take the Name of the Lord Your God in Vain.
 Have I used God’s name in vain: lightly or carelessly? Have I used the name of God in cursing or blasphemy? Have I been angry with God? Have I failed to keep the vows or promises that I have made to God? Have I wished evil upon any other person? Have I spoken about the Church, the saints, or sacred thing with irreverence, hatred, or defiance? Have I insulted a sacred person or abused a sacred object? Have I been disrespectful in my behavior in Church?

III. Remember to Keep Holy the Lord’s Day. 
Have I deliberately missed Mass on Sundays or Holy Days of Obligation? Am I habitually late to and/or leave early from Mass without a good reason? Have I received a sacrament while in a state of mortal sin? Have I not kept Sunday as a family day and a day of rest? Do I do needless work on Sunday? Do I make others work on Sunday? Do I try to be reverent and pay attention during Mass? Do I do penance every Friday, if not abstaining from meat, then some other form of penance? I am 14 years of age or older, did I abstain from meat on Ash Wednesday and the Fridays of Lent? If I am between the ages of 18 and 59, did I fast on Ash Wednesday and Good Friday?

IV. Honor Your Father and Your Mother. 
Do I honor and obey my parents? If still under the care of my parents, did I obey all that they reasonably asked of me? Have I neglected the needs of my parents in their old age or in their time of need? Am I willing to help around the house or must I be nagged a hundred times? Do I try to get along with my brothers and sisters? Have I neglected my duties to my spouse and children? Have I given my family good religious example? Do I try to bring peace into my home life? Do I respect my elders? Do I respect my pastor, bishop, and the Pope? Have I broken the law? Do I respect others in authority, priests, nuns, police officers, old people, baby-sitters? Have I stopped speaking to anyone?

V. You Shall Not Kill.
Have I unjustly physically harmed anyone? Have I unjustly verbally or emotional abused anyone? Have I seriously considered or attempted suicide? Have I intentionally killed a human being? Have I abused drugs or alcohol? Did I give scandal to anyone, thereby leading them into sin? Have I harbored hatred, anger or resentment in my heart? Have I failed to forgive? Am I prejudiced or have I unjustly discriminated against others because of their race, color, nationality, gender or religion? Did my actions, needlessly or recklessly endanger my life or health, or that of another person’s? Do I endanger my health by not eating right or exercising?

VI. You Shall Not Commit Adultery. Have I been faithful to my marriage vows in thought and action? Have I committed adultery, having sexual relations with someone who is married? Have I engaged in any sexual activity before marriage or outside of marriage? Have I respected all members of the opposite sex, or have I thought of other people as objects? Do I seek to be pure in my thoughts, words and actions? Have I forced adultery onto someone? Have I set out to seduce someone, or allowed myself to be seduced? Have I made uninvited and unwelcome sexual advances toward another? Am I living in a valid and licit marriage according to the laws of the Catholic Church?

VII. You Shall Not Steal.
 Have I stolen what is not mine? Have I returned or made restitution for what I have stolen? Do I waste time at work, school or at home? Do I gamble excessively, thereby denying my family of their needs? Do I pay my debts promptly? Do I seek to share what I have with the poor? Do I pay employees a living wage, or fail to give a full day’s work for a full day’s pay? Did I cheat on a test, on my taxes, or in business? Did I take advantage of another’s hardship or ignorance by charging more for a product than it is worth? Have I destroyed or misused another person’s property for fun?

VIII. You Shall Not Bear False Witness. 
Have I lied? Have I gossiped? Have I harmed someone’s reputation? Have I spoken behind someone else’s back? Am I critical, negative, or uncharitable in my thoughts of others? Did I perjure myself under oath? Am I honest in my school work? Do I keep secret what should be kept confidential? Am I guilty of libel, writing lies about another person in order to destroy his reputation? Am I guilty of rash judgment, assuming the worst of another person based on circumstantial evidence? Did I betray another’s confidence through speech?

IX. You Shall Not Desire Your Neighbor’s Wife.
Have I consented to impure thoughts? Do I pray at once to banish impure thoughts and temptations? Do I listen to, or engage in, impure conversations or jokes?

X. You Shall Not Desire Your Neighbor’s Goods.
 Am I jealous of what other people have? Do I envy other people’s families or possessions? Am I greedy or selfish? Are material possessions the purpose of my life? Do I trust that God will care for all of my material and spiritual needs? Did I deface, destroy, or lose another’s property without making restitution?

Conditions for Mortal Sins:
 Mortal sins are sins that must be confessed. They eat away and destroy your connection with God. If a sin is forced upon you, or it could not be avoided. Then it is considered a venial sin, not a mortal sin. Grave Matter – If the nature of the sin itself is not grave, urgent or dangerous. Then it’s not considered a mortal sin. Sufficiently Full Knowledge – If you are honestly ignorant of the nature of the sin. Then it’s not considered a mortal sin. Full Consent or Freedom – If you are not committing the sin freely, and are being tricked, forced or coerced into committing the sin. Then it’s not considered a mortal sin.
Guide for an Examination of Conscience: