By this ye may know if a man repenteth of his sins—behold, he will confess them and forsake them.
The Savior suffered for our sins and gave His life for us. This great sacrifice is called the Atonement. Through the Atonement, you can receive forgiveness and be cleansed from your sins when you repent.
Repentance is more than simply acknowledging wrongdoings. It is a change of mind and heart. It includes turning away from sin and turning to God for forgiveness. It is motivated by love for God and the sincere desire to obey His commandments.
Satan wants you to think that you cannot repent, but that is absolutely not true. The Savior has promised you forgiveness if you will humble yourself and make the effort that repentance requires. If you have sinned, the sooner you repent, the sooner you begin to make your way back and find the peace and joy that come with forgiveness. If you delay repentance, you may lose blessings, opportunities, and spiritual guidance. You may also become further entangled in sinful behavior, making it more difficult to find your way back.
Some people knowingly break God’s commandments, planning to repent later, such as before they go to the temple or serve a mission. Such deliberate sin mocks the Savior’s Atonement.
To repent, you need to confess your sins to the Lord. Then seek forgiveness from those you have wronged, and restore as far as possible what has been damaged by your actions. As you strive to repent, seek help and counsel from your parents. Serious sins, such as sexual transgression or use of pornography, need to be confessed to your bishop. Be completely honest with him. He will help you repent. If you have a question about what should be discussed with the bishop, talk with your parents or with him.
When you do what is necessary to repent and receive forgiveness, you will know for yourself the power of the Atonement and the love God has for you. You will feel the peace of the Lord Jesus Christ, which will bring you great strength, and you will become more like Him.