If you're engaged and well into wedding planning then you're probably (or you're about to be) bombarded with a million things wedding related. Flowers, dress, food, venue, etc. One piece of advice: Take a workout break.
I know it sounds odd, but a good workout may be your only chance to get a moment for yourself to stop thinking about how much you have to do for the wedding. Turn your phone off, bring a good book or magazine that is NOT wedding related (such things do exist, I swear) and take that aggression out on a treadmill and pair of free weights. Feeling really overwhelmed? Maybe your fiancé is driving you up the wall with his lack of cooperation? Hit the punching bag for a few minutes. Taking a workout break will not only help tone you up before the big day, but it will give you some "you, the bride" time and you'll feel energized and ready to go for everything else that comes your way.