Long story short, DH left at the beginning of the year and although still involved, the lions share of time with the DC is with me.
DD turned 4 at the weekend and DS is 18m.
I just find that i am struggling to control my anger with DD - she is of an age that pushes things anyway but she's also reacting to H being gone too, i guess. I just feel like she doesn't listen, does nothing she is asked and pushes & pushes & pushes till i lose it... and i end up hating myself.
I am so scared i am hurting her emotionally and causing her long term issues... I tell her i am sorry almost straight away and we chat it out but i need to stop getting to that point...
I am finding things so hard and can't bear the thought of my DD starting to modify her behaviour around me... she's 4, ffs - she is just being 4!
When i mention to H that i am struggling with her behaviour, he doesn't get it - she doesn't act in the same way apparently, no tantrums, answering back, pushing him! I just feel like i'm doing it all wrong!
Help me cope with this as I really want to change and be a better mum to both my kids... DS is mostly oblivious but i am guessing he will also be learning not to push mummy and the thought of my own children 'walking on eggshells' makes me sob 
Any and all advice welcome - just please be gentle as I am already beating myself up over this.. why can't i change?