It really doesn't matter what the reason is, there is something easy you can do to immediately brighten your outlook: instead of moping around and dreading your start, force yourself to look at things from a positive perspective. Think about your many blessings and smile. You'll feel better and once you get in gear the day will go great. And remember, each day that goes by gets you another day closer to the next fun weekend.
So get out of those pajamas and get dressed, Sleepy Head. Clean up your act and when you look at yourself in the mirror while primping just say: "Smile and the whole world smiles with you", and then just do it. It's amazing the difference that a smile can make. It takes less physical work for you to carry a face with a smile instead of a frown and it is also infectious. Just look at yourself smiling in the mirror and you'll notice you look healthier and it will actually make you feel happier as well.
And then, with everyone you pass on the way into work just say "Good morning" with a smile on your face. Oh, some of them might look at you strangely, but you'll notice after a while that most will return your smile even if they were frowning before seeing you. It works and you'll see that it makes your day go better and it makes you more productive. And besides, who wants to spend all day hanging around with a grump and whether you like it or not you hang out with yourself all day.
So come on, folks, smile like your life depends on it. And a regular routine of it will lower blood pressure and stress and will actually make your life healthier and probably longer. Once you've gotten in the habit, it's easy, but you might just want to put a little reminder on your mirror. Put a little sunshine in your life and the life of others.
God bless you all and have a great week.