This is a good question to think about before you go to your interview. It can help bring clarity about what your intentions are for wanting this new position. It can also help you check to make sure you're headed in the right direction. If you liked your past job because you to work with people in a hands on, challenging environment, working as a vet assistant in a clinic is perfect for you. However, if you enjoy working in an office behind a desk on a computer all day, you might want to reconsider this new role. If you were to use that as an example, I know the interviewer would be questioning if you're a good fit. When you give your answer, talk about how the elements you enjoyed in your favorite job to show how they are similar to this new position. It could be a completely different field. That's okay! Point out three key characteristics of the job that made it great. Think about how they compare to what you're looking forward to when you work at the vet clinic.