Thief of Souls: Star Shards Chronicles, Book 2

The kids impacted by the star shards want to use their powers to do good, but they find out that is hard. They try to "undo" harm that they have done and realize patterns to help others. One heals others. He ends up getting followers, including some that harm people so they can get healed. There are episodes where they go into a casino and win a lot of money and then donate it to charity. In the process they remove the glass from a shark tank, yet the water stays. Only at the end do they discover that a traveling companion has been manipulating them to do harm to assist in the harvesting of souls.

Scorpion Shards: Star Shards Chronicles Series, Book 1

A few teenagers live bizarre lives. They seem to have special powers that drive them to do "bad" things. There is also some related special strengths. One teenager draws girls to be romantically attracted to him. Another can see many paths and thus use a small event to drastically change somebody's life. There are abilities to reverse entropy, age in reverse and other mixtures of good and bad. The kids try to get together. They have been fighting their powers, however, one eventually "gives in". They later discover that there are demons from an exploding star that possess them. They find they can "scare" them out by threat of death, but still remain with "good powers". It is an interesting take on super powers that can be both good and bad.