It’s too much to hold all of our problems in our mind at once. We can only deal with one issue at a time.
Mentally running ourselves through a long list of problems and concerns, does nothing to get us closer to solving them. We have to let it all go and be in the moment. Then, we’ll be more able to deal with one of those issues. And then another, and so on.
We have a mind equipped to deal with problems, but it must be harnessed.