You can change the future, because the future is a non-existence and a lie. The past cannot be changed, because the past is being and truth. The past is already structured by time, and the future is not yet structured by time.
They say take care of today, and tomorrow will take care of itself. This means that today we need to do today, and tomorrow we need to do tomorrow. Similarly, don't try to do what you did yesterday today. What you should have done yesterday and didn't do should be in the past. Today you need to do today, yesterday has already died, and tomorrow has not yet been born.
Don't go into the past, I forbid you to think about the past. So what if you did everything wrong? So what if it didn't work out? Your 101st mistake. Don't be sad, they didn't kill the first 101, they won't kill the next 1001.
As soon as you start to be silenced by doubts and suspicions of yourself in mistakes, you need to repeat like a mantra: "Everything is good, everything is good, everything is good. I did everything right. It's all right."
Useful commands for auto-training. It's okay. I did everything right. Don't think about it. Focus on Now. To think about the future or the past is pride. Don't judge. Don't create an idol for yourself. Love your neighbor. Don't lie. Don't kill me. Restrain your hunger. God is good. Good To be.