Change
Like a doctor who heals the sick Jesus came to help people who feel guilty and bad. He came to forgive the sins and the evil things you have done and because of which you feel guilty. But he also came to remove the evil things others have done to you so that you don’t worry and feel guilty about it.
Matthew came to believe it. From the moment Jesus told him: “Follow me,” he stayed with Jesus. That is why he saw everything that Jesus did and wrote down in a book the way Jesus saved people. His book is a part of the Bible and is called The Gospel of Matthew. You can read it too.
Matthew recorded how Jesus loved all the people. That is why He decided to take upon Himself our sins and the bad things we have done as well as those that others have done to us. He took all our sins and our punishment on himself and died on a cross with them. And as He was the Son of God and did not do anything bad to anyone, God resurrected Him. That is how Jesus forgave Matthew of all the evil things he had done. And He can forgive you too. You will again belong to His perfect family.
We read in the Bible what God does with the sins of the people who belong to God’s family:

Acts 3:19
God wipes out our sins.

Micah 7:19
He throws them into the deep sea.

Psalm 51:4
He washes them away.

Isaiah 44:22
He blots them out.

Hebrews 8:12
He does not remember them anymore.
How Can You Become Part of God’s Family?
Tell God that you are sorry for the bad things that were your fault. Say it with your own words and sincerely.
Thank God that His Son Jesus took your punishment on Himself and died because of your sins.
Ask God to accept you into His family and remove all your sins as well as the sins of those who have trespassed against you.
Tell Him that you want to live in a way that pleases Him.
If you already belong to God’s Family
If you have already accepted Jesus as your Saviour, you belong to His perfect family. You don’t have to feel bad about the things you have done or about those that have been done to you. Every day ask the Lord Jesus to help you live in a way that pleases Him. And whenever you do something bad, ask Him to forgive you. And if you worry about bad things others do to you, ask Jesus to help you or send you somebody who can help.