Tween Tantrums

Our 12-year-old daughter is constantly saying and thinking negative things. Everything that comes out of her mouth is negative and when were not together she thinks I died. Even if she recalls a memory from childhood, she twists it into a negative experience. She is only child and the youngest child on both sides of our families, so she's used to being babied. We took the parenting course last January because her anger episodes were happening every day. We're struggling being consistent with TSG principles, because were not naturally consistent people. She can't seem to say anything nice about her peers, parents, and even horses. How can we as parents work on being more consistent? How can we help her to start seeing the positivity in things. Thank you for all your doing to protect children and parents at the Capital.