Please help with any advice for my 18 month DD. She is SO challenging, everything is becoming a total battleground with her. Every day it is such a struggle - getting dressed, nappy changes, brushing teeth, putting her in car seat/pram/high chair, brushing hair, cutting nails...EVERYTHING!
Anything which requires her to co-operate even slightly is a battle as she screams, fights, wriggles away and has now started biting
She bit her big bro today because he wouldn't share his toy with her 
I have tried all the usual distraction techniques, ignoring the tantrums, disciplining if she is really naughty, but she is getting worse. I am at my wits end - I burst out in tears today when I was trying to put her in her car seat as she just fought me so much and I ended up (as is frequent) having to physically pin her in the seat to get the buckle done and I felt like such a bad mother. Why can I not get her to co-operate ever?