I couldn't agree with this article even more... I worked a sales job, creative staffing, in the financial district of Boston for almost 5 months. It was the most miserable 5 months. I was always tired. I put on about 30 pounds from all the eating out for lunch and pounding beers at Biddys bar across the street every night after work. Plus, I was unhappy.
Now I can say I'm happier than ever, and it's because I do jobs I love. I technically have 3 jobs, but they are broken up in a great work-life balance, and I love to do all of them. I'm a firm believe that you have to be happy at what you do, or you will never be happy.
Great read!