I know quite a few people who actually start feeling depressed on Sunday night because work is the next day. Sadly, for many of them, this has been a feeling that has existed for years. I honestly cannot comprehend this state of mind at this point in my life. Sure when I was fresh out of college and new to my professional work life I didn’t always get thrilled about Monday mornings, but as I have progressed in my career and thinking, that is a long distant memory. If what you are doing makes you that unhappy either change how you think about it or choose to do something else. Life is too short for habitual Sunday night misery.
Sometimes it’s hard to switch back into work mode once you’ve had several days off (especially this time of year). However, being successful means being able to turn it on and off as needed.