I know, I know, everyone says, "I've made mistakes, but I have no regrets..." Well, then I say you are either a saint or a sociopath. However, if you are interested in other human's regrets, visit rigureto.jp. You can read bite-sized thought bubbles of real Japanese regret and be uplifted by the responses that appear. The layout is kind of mesmerizing.
More JLPT stuff is coming soon.