Counsel the doubtful
Give advice to those who are not sure what to believe or what to do. Help them feel more certain and supported.
Instruct the ignorant
Teach others what you know about faith and right behavior. Help your friends understand things they might not know about being good and kind.
Admonish sinners
Gently tell others when they are doing something wrong. Help them choose better actions in a kind way.
Comfort the afflicted
Help people who are sad or having a hard time. Listen to them and be there to make them feel better.
Forgive offenses willingly
If someone hurts you, try to forgive them without holding a grudge. This helps you and them move on.
Bear wrongs patiently
When someone treats you unfairly, try to be patient and forgive them. Don’t react with anger.
Pray for the living and the dead
Pray for everyone, including those who are still with us and those who have passed away. Your prayers can bring peace and help.
Read more and see examples at https://young-catholics.com/865/the-spiritual-works-of-mercy/