Psalm 73, next

Now the author finally comes to the truth of the matter. What we see is not all there is, and we can trust God to deal with the wicked in the future.

When I pondered to understand this,
It was troublesome in my sight
Until I cam into the sanctuary of God;
Then I perceived their end.
Surely You set them in slippery places;
You cast them down to destruction.

See: he changes his perspective from looking at himself and his perspective to looking to God and His perspective.