I'm sure you've done at least one bad thing as well as many good things newbie-one. As for me... "Too many damn skeletons to fit in one closet":
i've occasionally done kind of random stuff, like riding on random buses with my all week senior discount. nothing i'd call good or bad socially. just socially and morally neutral kind of random things. but yah, its not often i do anything without thinking it to death furst.
Why don't you become a missionary? That is doing great deeds for people you don't know that well but need your help