No one had to worry about Peter after his conversion. Your investigators can be that converted.

If you, through poor judgment, were to cover your shoes with mud, would you leave them that way? Of course not. You would cleanse and restore them. Would you then gather the residue of mud and place it in an envelope to show others the mistake that you made? No. Neither should you continue to relive forgiven sin. Every time such thoughts come into your mind, turn your heart in gratitude to the Savior, who gave His life that we, through faith in Him and obedience to His teachings, can overcome transgression and conquer its depressing influence in our lives.

When revelation comes write it down.

Remember, loving them is the powerful foundation for influencing those you want to help. ... As a companion to that love, trust them. In some cases it may seem difficult to trust, but find some way to trust them. The children of Father in Heaven can do amazing things when they feel trusted. Every child of God in mortality chose the Savior’s plan. Trust that given the opportunity, they will do so again.

You are here on earth for a divine purpose. It is not to be endlessly entertained or to be constantly in full pursuit of pleasure. You are here to be tried, to prove yourself so that you can receive the additional blessings God has for you.

Repentance is not punishment, it is the hope filled path to a more glorious future.

Peace is the precious fruit of a righteous life. It is possible because of the Atonement of the Savior. It is earned through full repentance, for that leads to refreshing forgiveness.