Nothing can be done about what happened yesterday. However, you can make plans today in order to have a better tomorrow. If someone did you wrong, let it go. If you made a mistake, don’t dwell on it. What matters most in life is what you do with “today” because you have no control over yesterday and tomorrow.
“This is the day that the Lord has made; let us rejoice and be glad in it. Save us, we pray, O Lord! O Lord, we pray, give us success!” (Psalm 118:24-25, ESV)