There are a number of Bible verses on disappointment, because it is one of those emotions that can lead us to bad places in our heads if we let it fester. There are bible verses that remind us that we all face disappointment and others that let us know how to overcome the feeling and keep our eyes on God's plan for our lives:
We All Face Disappointment
Exodus 5:22-23
"Moses returned to the LORD and said, 'Why, Lord, why have you brought trouble on this people? Is this why you sent me? Ever since I went to Pharaoh to speak in your name, he has brought trouble on this people, and you have not rescued your people at all.'" (NIV)