So don’t worry about tomorrow, for tomorrow will bring its own worries. Today’s trouble is enough for today. -Matthew 6:34 (NLT)
If you think about it, we can apply this same principal to dwelling on our mistakes from yesterday. It won't change anything to obsess over those mistakes. Make amends and move on.
That's what I'll be doing today! Yesterday, I discovered that my cyber schooling oldest son had some very poor grades going on in several subject areas. And while I'm not going to just pretend they don't exist because yesterday is in our past, I am going to let go of the blame I laid on myself over it and help him through it today. Today will be better. Today is a gift and we are going to treat it as such!
Here's my challenge for you and me today: Stop worrying about yesterday, don't worry about tomorrow, think only of today and how you can best serve God today.