Certainly learning what you don’t like or don’t want to do is valuable. And you can even include such information effectively in your application and essays. In general, however, you want to emphasize the positive: Where are you going? What do you want to accomplish? What do you like?
- For example, what attracts you to medicine (or business, or law, or your specialty)? Your response has to be more than you hate your current job as a programmer (or whatever). Analyze your unhappiness and briefly outline it. Then focus on how medicine will give you so much of what you enjoy while avoiding entirely or minimizing the pitfalls of your current job.
- If you are taking courses to make up for a low GPA or test score, don’t highlight that negative. You are taking the courses to prepare yourself for graduate school or to explore an intellectual interest of yours.
- If you are asked to write about a failure or mistake, briefly and honestly describe that experience, but spend the bulk of the essay focused on what you learned from it and how in a similar later situation you behaved differently as a result of those lessons.
Think and write positive.