One of the many little quirks of writers is the tendency to make strong connections with their characters. Sometimes, like with me, it's like the character is me, albeit in an alternate reality. I now every hope, every dream, every pain. There isn't a single part of the character's life I don't know by heart.
Others, see it more like conversing with a friend. The friend tells them what they like and what they don't, what they want to do and not. Even going so far as to flat out refuse to allow the story to progress until the author gets it right.
My good friend, Glenda Poulter, falls more into the second category. This is one of her favorite stories...
She has a condition which she sees a psychiatrist to control. When she was first diagnosed, they had her on a drug that deadened all her emotions. She couldn't smile, laugh. She existed, she functioned, she didn't live. She hated the meds and begged her psychiatrist to give her something else. She did and there was an almost immediate difference. She had emotions! She was alive again! She went back to her psychiatrist for a follow up and the doctor asked her how she was going. She said, "I can hear the voices in my head again!"
The doctor's responded with, "If I didn't know you were an author, I'd be concerned."