List of venial sins
Failure to Pray Daily
Failure to accept that each person is personally responsible for his own sins
Failure to accept that Hell is real
Failure to accept that Our Merciful God allows must people to go to Hell
In all the land, says the LORD, two thirds of them shall be cut off and perish, and one third shall be left. (Zechariah 13:8)]
Not Loving God with your Whole Heart, Mind, Soul, and Strength
Tempting God
Trying to Control Things, rather than Seeking God Will
Entertaining Thoughts Against the Faith
Failure to Learn about the Teachings of the Church
Failure (Not Seriously) to Fulfill the Duties of one’s State in Life
Playing Dungeons and Dragons, or similar games
Indifference or Ingratitude towards God
Not Trusting God
Having a Lukewarm Relationship with God
Caring more about what others think, rather than what God thinks
Not trying to grow Spiritually, and settling for mediocrity
Acedia (Spiritual Sloth or Laziness
Being Angry at God
Giving in to Depression or Self-Pity
Being Embarrassed at being a Catholic
Failure to Examine one’s Conscience Daily
Failure to Accept Unconditionally the True Teachings of the Catholic Church
Failure to Pray when Tempted
Disparaged the Church because of the recent sex scandals and cover-up
Failure to Defend the Church when it’s being Ridiculed
Not trying to Practice frequent Remembrance of God’s Presence
Failure to support the Church Financially
Failure to Support the Church by Volunteering tour Time or Skills
Refusing or Denying the Mercy of God
When voting, fail to consider the Moral standings of Politicians
Failure to Accept Suffering
Failure to Offer-Up Suffering
Putting Off Confession needlessly
Being willfully Distracted at Mass
Being willfully Distracted during Prayer
Failure to Evangelize
Attended a Catholic/non-Catholic Wedding in a non-approved setting
Attended a Wedding for a Divorcee before the death of the first spouse
Being Angry at God
Ashamed to Bless Yourself, before Grace, when eating out in public
Fail to genuflect (bend one knee) before entering the Church pew
Failure to bow, remove your hat, or Bless Yourself, etc, when passing a Church
Fail to genuflect at the name of Jesus "at the name of Jesus every knee should bend" (Phil 2:10)]
Cursing thoughtlessly
Using the Lord’s Name in surprise, or anger (without thinking or habitually)
Irreverent, Improper, or Inappropriate use of Scripture
Vulgar or Inappropriate Language
Speaking Badly about the Church
Using the names of Saints, the Blessed Mother, or the Pope Irreverently
Telling Irreverent Jokes about Sacred Persons, or Objects
Doing Limited Non-Essential Labor on Sunday
Arriving Late to Mass, or Leaving Early, without good reason
Failure to Pay Attention, or Participate at Mass
Being Irreverent at Church
Failure to spend extra time on Sunday in Study of the Faith, or Prayer
Failure to reserve Sunday for Family or Recreation
Allowing Sports or other schedules to dictate the Sunday schedule
Desecrating Sunday or a Holy Day of Obligation by Sinful Amusements, or Inappropriate Entertainment, Keeping Bad Company, or Impure Thoughts
Fighting with Brothers, Sisters, or Relatives
Non-serious Disobedience to parents or those in authority
Making Fun of the Handicapped or Elderly
Failure to Help the Elderly or Handicapped
Not Praying for those Entrusted to Your Care
Not Praying for those in Authority over you (Parents, Teachers, Employers, etc.)
Being Too Strict with Rules, Boundaries, and Discipline
Being Too Lax with Rules, Boundaries, and Discipline
Failure to properly Respect Parents or Authorities
Feeling Ashamed of or Embarrassed about your parents
Lack of Gratitude toward your parents
Not trying to Cultivate Peace in your family
Failing to be a Good Example to your family
Meddling in the Affairs of Married Children
Treating Adult Children like Minors
Spoiled or Pampered your children, instead of giving them attention & affection
Nagging your Spouse or Children
Failed to lead your children to Mass, Communion and Confession
Treating those under your authority Disrespectfully
Breaking Just Civil Laws without serious reason
Taking advantage of others for your own selfish purposes
Taking one’s Spouse for Granted
Hired others for the care of your children, without good cause
Failure to Teach your Children Adequately about God, or their Spiritual Life
Failure to spend significant quality time with your children
Has your wife unnecessarily taken employment away from home, and children?
To a lesser degree: Pride, Boasting or Arrogance
Preference for Designer Label Clothes
Failure to accept that a fetus, from conception onward, is a real human person
Vanity
Stubbornness without good reason
Listening to Bad Music
Selfishness
Unnecessarily risked your life or the life of another
Wishing Evil Upon another
Seeking Revenge or Retaliation
Harboring a Grudge
Prejudice
Using Obscene or Vulgar Gestures
Anger
Fighting or Arguing over slight matters
Rudeness
Failure to Apologize
Excessive Watching of Television
Excessive playing of Computer Games
Watching Television, Movies, or DVD’s that promote Sex or Violence
Playing Computer Games that promote Sex or Violence
Excessive use of the Internet
Failure to Pray for Sinners
Using the ‘silent treatment’ on others
Failure to Pray for Deceased Parents or Relatives
Violating Friendships
Willfully doing things to others to Anger them
Failure to take Required Medications
Abusing your Medications
Treating others Unjustly
Habitual Lack of Punctuality
Procrastination
Failure to Respect the Dignity of Yourself
Failure to Respect the Dignity of others
Laziness
Smoking or Chewing Tobacco
Failure to Care for one’s Health
Driving Carelessly
Driving while Intoxicated
Intemperance (Overeating or Drinking Too Much)
Refusing to Forgive Another
Lack of Custody of the Eyes (Looking Inappropriately at others)
Keeping Bad Company
After encountering Immorality, failed to request a refund, or cancel a subscription
Selfishness in Marital Intimacy
Seeking Wrongful Attention from another
Failure to Respect Persons of the opposite sex
Treating others as Objects
Acting Immodestly, or Carrying oneself Immodestly
Dressing somewhat Immodestly
Allowing your heart to Stray from your spouse
Wasting Time
Failure to Pay Debts Promptly
Failure to Practice Charity, or to Help the Poor
Willful Failure to Return Borrowed Items
Theft of small or inexpensive items
Attachments to persons or things
Failure to keep a promise
Squandering Money on needless items or pursuits
Gossiping
Lying
Spreading Rumors
Talking behind another’s back
Making Rash Judgments
Being Unjustly Suspicious
Being Negative, Critical, or Uncharitable in thought, about others
Failing to Restore the Good Name of others you’ve Injured Verbally
Cheating at Games or School Work, etc.
Flattery
Bragging or Boasting
Speaking Unkindly to, or about others
Exaggerating the Truth
Complaining, whining, or Seeking Attention
Looking at Immodest Pictures or persons
Playing with Temptation, or Curiosity about Temptation
Not trying to Control your Imagination
Brief Entertainment of Impure Thoughts, or Fantasies
Telling or Listening to Impure or Vulgar Jokes or Stories
Sadness or Anger at the Good Fortune of Another (Mild Envy)
Desire for the Goods of Another (Mild Jealousy)
Failure to distance yourself from the world’s wealth (Mild Greed)
Materialism
Not Trusting that God will provide All Material and Spiritual Needs
Attachments to Riches or Material Goods
http://www.followthissite.com/list-of-sins.php
This is an interesting list to read through... Some I see as sins, plain and simple... for example Yeshua stated that lusting is as bad as committing the adultery...
Some are very much invented by RCC to control its congregation and not something God would endorse.