What you can change is what you can do tomorrow, what to study, listen to, what to read, who to meet, ... And what do you want to create next in your life.
And what you want to correct with those mistakes that you've done in the past.The past can't be changed and we can no longer go back there if we want something to change or the wrong decision that we've committed. We need to move on and look in the present and future.
Doing the right things is what we should do instead.
But the idea is believing. If we believe strongly enough, we might be able to change the past. In fact, this is what will happen exactly. Here's how.
Those of us who believe in Jesus-salvation, barely believe so. The Holy Spirit will come to us and make our weak faith into something that is supremely strong. Then Jesus will return, and take His people to the New Universe, while this old universe is destroyed. The destruction will be so great that all of time will be gone, and this whole universe and its physics will never be brought to mind or be remembered ever again.
This means that believing HAS changed the past.
