You're an effective leader during this three-week period; your confidence is high, your energy humming. You're motivated to get things done, so rally your work team to get a push on that new project, or your neighbors for some group yard work or a fun social activity. Everyone will notice your high energy and your good mood, and they'll hurry to fall into step behind you.
If you're in a leadership position, that's great; if not, you can still get people in your corner. The usual frustrations of your daily life won't bother you so much now. You've got a great attitude -- one of optimism and confidence, based on the fact that you can blast through any obstacle and you know it. And you'll have fun doing it! This is a great time to have some fun as well as working hard at the office. Organize a pickup basketball game or an impromptu group picnic, or take your dog (or your neighbor's) to the dog park and have fun connecting with the other canine-lovers. At the very least, keep up on your exercise program to provide an outlet for your abundant energy. If you play your cards right, you'll get a lot done around the house and at work, and you'll still be motivated to work out!