Don't allow anyone -- not your friends, not your relatives, not your partner, and not your co-workers -- to put you down for mistakes you've made in the past. Many people have a nasty habit of, in the heat of an argument, or as a result of having a bad day, bringing back to light past mistakes that you've apologized for, learned from, and pledged not to repeat. They likely see it as ammunition they carry in their back pocket in the event they really want to make you feel like crap. They tell themselves that you should be appreciative of the fact they forgave you, even though, in their view, you didn't deserve it. It's as if you "owe" them. If they really forgave you, they should not indulge themselves by giving you guilt trips whenever the mood strikes, even if you've done something more recently to ruffle their feathers. Focusing their ire on the matter at hand is one thing; rehashing things you've put behind you is another entirely. I...