​Luke 4: 17-21 17 And there was delivered unto him the book of the prophet Esaias. And when he had opened the book, he found the place where it was written,
18 The Spirit of the Lord is upon me, because he hath anointed me to preach the gospel to the poor; he hath sent me to heal the brokenhearted, to preach deliverance to the captives, and recovering of sight to the blind, to set at liberty them that are bruised,
19 To preach the acceptable year of the Lord.
20 And he closed the book, and he gave it again to the minister, and sat down. And the eyes of all them that were in the synagogue were fastened on him.
21 And he began to say unto them, This day is this scripture fulfilled in your ears.

Luke 2:10 - And the angel said unto them, Fear not: for, behold, I bring you good tidings of great joy, which shall be to all people.
Jesus came to the world to die for every single person - This is why it is a good news. 

Why is Jesus a good news?
Good news is not the same as great advice, and trying to do what is good by our own strength (which last for a little time) but the coming of Jesus signifies devine restoration where we can have a unbroken relationship with God.

Why is Jesus packaged for bad people?
Regardless of who we are, the actions or past of any man does not disqualifies him or her from the love of God. Who is bad, who is good? Romans 3:12b - "there is none that doeth Good, no, not one."