It's a fairly common phenomenon: somewhere around mid-day Sunday, people who aren't blissfully happy with their Monday routines start to feel a twinge of anxiety. The brain is a tricky creature. The anxiety takes over and makes you feel like you're getting into work mode, even though it's still the weekend. This happens to students and people with 9-5 type jobs, and is often characterized by insomnia and agitation.
What to do about the Sunday night blues? The best cure, of course, is to do something you love Monday to Friday. When the conditions of your job are right, you can start the week excited about it. You like the work for its own sake and hence, it isn't a cause of anxiety.
But another, perhaps more practical, idea is to schedule something fun for Sunday nights. Get together for a game night with friends. Have people over for dinner. Find an adult soccer league that plays on Sunday nights. Go to religious services. Volunteer with your family somewhere. In nice weather when it stays light late, go for a long bike ride or walk. The key is to figure out something you'd really enjoy doing, then plan it ahead of time.
Why is that important? Thinking about something and anticipating it is half the experience -- that's why the thought of Monday can take over Sunday night and ruin it. But if you plan something enjoyable for Sunday night, you'll spend most of Sunday thinking about that, and cram any Monday anxiety into the small time afterwards.
What do you do on Sunday nights?