I've never met a groomer working in a vet clinic that liked his/her job! Its really tough environment. The animals are stressed, the people are stressed.
My best work environment was running a storefront salon next door to vet clinic. It was owned by vet clinic, so I had financial backing and security, but I had 100% control of the facility, policies, scheduling, etc. It only took 120 clients to cover expenses and pay myself and an assistant. I was open 3 days/week. I stopped due to having my second/last child. It was ideal but I wanted to stay home with my baby more.
If you have loyal clients, it doesnt take many to have a solid business. Maybe you can open your own place or convert a vehicle to a mobile salon??