Hope is the thing that keeps you going. When your legs are tired, when you can't seem to go on, a glimmer of hope gives you reason to go on.
You want to give up, you want to let go, but you can't because of hope. You go to work, hoping it will get better, hoping for retirement. You stand in line, hoping it will only be another hour.
Hope keeps you holding on, like a story line you can't stop listening too, because you want to know how it ends.
Surrender is without hope and it doesn't care. That's freedom.