Prayer Single View

As an adult my grandma Is way tooooo critical and condemning over me. I feel offended and In return become disrespectful towards her. I talk back, argue , try to defend myself, I keep rambling on and don't stay quiet, then I tell her to stop talking and being overly critical. What I'm doing is sin and i seek God and say I repent but then it starts all over the next day ....the cycle repeats over and over again. I act like a little brat who isn't getting their way. Stubborn even.