You've been too tough on yourself over the past few days, and today you have got to cut yourself some slack. Okay, so you forgot someone's birthday: it happens! Just send belated good wishes and there will be no hard feelings. People give you the benefit of the doubt and know that you've had a lot going on for a while now. One misstep doesn't have to get you off track for the rest of the day. You have the grace required to ask for forgiveness: and then just keep humming along!