For if you forgive others their trespasses, your heavenly Father will also forgive you, but if you do not forgive others their trespasses, neither will your Father forgive your trespasses.
Matthew 6:14-15

Nobody escapes offense, whether coming or going. Everyone has been insulted, defrauded, abused, slandered...and everyone has offended someone else. If you're feeling guilty for something you've done, the first step in resolving your inner conflict is to forgive those who have done things to you.