I don't regret anything. (short story)

Jeffrey is that person who sees everything from the brightside, he is always optimistic even now when he is in prison. He doesn't regret his actions in the past and doesn't think that he will regret anything in the future, because his motto is that everything happens with a cause. But will he surely never regret anything as he predicts?

Tracy is that person who never lets anyone see what's going on inside her mind. She likes to hang around with her friends, but one day she and her friends did something that changed there life... Being banned to prison that is. She got very pessimistic view on life, until something special happens.

(English isn't my motherlanguage so if you want to correct me, please leave it in a comment)