My daughter was the same!! Up until she passed 6 or 7 (she's 9 now) I thought I'd lose my mind.

One example: we had a FOUR hour stand-off when she was 3 yrs old, about saying "sorry". She refused! I had an intuitive sense that this was a battle I needed to pick, so I stuck to my guns. She screamed and stomped and belligerently defied me for FOUR hours. OMGOSH. She finally realized that I wasn't going to change my mind and if she wanted out of her room, she'd have to say sorry, so she did. (I can't even remember what the sorry was for, lol).

She's still extremely intense, sensitive and reactive, but not nearly as stubborn with me. As she has aged she's also learned to pick her battles.

Hang in there. You're not alone smile It gets better...