Make us glad for as many days as you have afflicted us, and for as many years as we have seen evil.If you have lived on this earth for any significant amount of time, this verse will mean something to you. It might mean something different to you than it does to me or than it does to another person who lives on the opposite side of the the world or just the opposite side of the street, but if they sit down and they open their Bible and they read it... it will mean something.
There will be some hard thing that you have gone through or are going through that will pop into your head. Maybe it will be multiple things or things that span the entire course of your life. But the moment that word "afflicted" entered your eyesight, there was something that popped in there.
This is part of the human experience, to go through trials, to go through affliction. So, we cry out to God to make us glad in the middle of all of this. Though we only exist on this planet for a few short years, they don't feel short to us.
There is a gladness that God can bring. Seek the gladness that is in Him and through Him. That gladness comes from an eternal source, like nothing you will find on this earth.