My young terrier gets very distressed about wearing her harness, she runs cries and urinates. I've spoken to the vet and and they say just get her used to it with positive reinforcement, and or walk her on the collar. I'm very uncomfortable with walking her from the collar, and have had little luck with the positive reinforcement. I have tried different harness types to try and find her the most comfortable fit, but I'm at a loss of how else to help her. Has anyone else experienced this?