Gospel Picker, I can't give you any advice about your career choices, but I hope you'll end up where you'll help the most people. As for sin/forgiveness and regrets for things we can't call back, a little story: Long, long ago a Roman centurion asked one of the early Christian fathers how God could forgive sin. The father asked the centurion, "If you had a (small) rip in your cloak, would you throw it away?" The centurion replied that he would not, he would have it mended. "Ah," said the father, "So it is with God." (All this is half remembered from "Desert Wisdom: Sayings from the Desert Fathers" (Doubleday, 1982), a collection of Very Early Christian stories that you might enjoy.) Be well.