Programming can be a tough job. People are attracted by the pay and the great working conditions but the career is not for everyone. True you're not in the middle of a construction site with the sun shining in the middle of the summer but the constant pressure to produce will eat you up. There's a point where you just burn out if you're not careful.<p>Yes, if you are getting sick because of work then yes it's the wrong job for you.<p>What do you do now? Look at what you like and find a job that has many of the characteristics you like. You won't find the perfect job at the start but you can slowly evaluate the new job and move towards what you like. Volunteer if you can. Find a career coach to help you.
I hope you can find rest in writing about it, like you're doing on your blog. What's the problem exactly when you say you're just staring at the screen, impossible to write a single line of code? Impostor syndrome, fear of not getting it perfect, not enough energy to even start a project, inability to concentrate and fiddle-around all day, defaitist thoughts about the uselessness of it all, or is the job simply too easy and unmotivating for you? With your background, maybe you can turn it around and find satisfaction in devoting your time to help out those who are addicted to their smartphone use, as a mental advisor or as an innovative app writer/designer.