Ask friends for referrals, and visit several shops. Observe the groomers' dog-handling techniques. Feel comfortable with the groomer you employ, and your dog is sure to enjoy its visits to the shop. Whether you groom on your own or call on the pros, your dog will thank you for your efforts. I've always enjoyed grooming a well-kept dog.
Some people knit or crochet to relax.
Others do needlepoint. I groom dogs.