Daniel 4:19

"Then Daniel (also called Belteshazzar) was greatly perplexed for a time, and his thoughts terrified him. So the king said, 'Belteshazzar, do not let the dream or its meaning alarm you.' Belteshazzar answered, 'My lord, if only the dream applied to your enemies and its meaning to your adversaries!'" NIV translation

Daniel must have immediately known the message behind the dream and he was worried about telling it to the king.  

Daniel 4:20 - 22

"'The tree you saw, which grew large and strong, with its top touching the sky, visible to the whole earth, with beautiful leaves and abundant fruit, providing food for all, giving shelter to the beasts of the field, and having nesting places in its branches for the birds of the air - you, O king, are that tree! You have become great and strong; your greatness has grown until it reaches the sky, and your dominion extends to distant parts of the earth.'" NIV translation

We have all probably had someone tell us that they had good news and bad news for us and ask which we wanted to hear first. Here, Daniel gives the king the good news first which is the fact that the king has become as great as the tree of his dream.

Daniel 4:23

"'You, O king, saw a messenger, a holy one, coming down from heaven and saying, "Cut down the tree and destroy it, but leave the stump, bound with iron and bronze, in the grass of the field, while its roots remain in the ground. Let him be drenched with the dew of heaven; let him live like the wild animals, until seven times pass by for him."'" NIV translation

Now, the bad news is that the tree is to be cut down. God is good and even with this bad news comes hope. We see that the roots of the tree are not removed but instead are only restrained by the iron and bronze. In this, we see that God is in control of all things and all things happen in His time.