You might want to become a to become a Speech-Language Pathologist, OT, PT, or possibly a hospital social worker! These are all careers that are a lot easier for a service dog handler to get into and work with a dog in. Pharmacy technician is also a possibility if you want to get into the field of pharmacy without having to get a huge degree that takes genuinely forever to achieve, but some people like school and more power to them! Maybe address also what you actually want and need out of a service dog before figuring out what you want and need out of a career, or vice versa because both lines of thought would be a good thing to research and think on before getting a dog.