Mine is the emotional arguing that I enter into with my now 4 year old DD1. DH says we sound like sisters arguing sometimes....
She's very bright and has spoken well from a very early age so it's often been easy to forget how young she is so I'd lose my patience and bite back when really I should have held my tongue. I've never sworn at her or called her names or anything like that but I've told her to 'stop being silly' and 'I don't want to hear it' which is basically shutting her down when she's upset and I should take stock of the fact that she's a little person learning how to cope with her emotions and I should be the adult in control of my own emotions and empathise and be more patient with her.
We're both so similar, very emotional, vocal, loud, stubborn.....love having the last word, heaven help us both when she's in her teens!
I also have other things I feel guilty of, DD1 fell off the bed when she was 6 months, DD2 fell and smashed her face open on a toy that required a trip to hospy, DD1 ran off on me at the shops and I couldn't find her for the longest 5 mins of my life....I smacked DD1 for the first and last time when she was 3, she cut holes in her dress, I was so cross that I knelt down and smacked her bum and she immediately slapped me across the face and we both fell in a heap on the floor crying from the shock of what we'd both done.
Many proud moments right there!