One story I find very relatable from Avraham Avinu is when Sarah asked him to send away Yishmael and Avraham didn’t want to do so. For Avraham this was expelling his son from his home. Avraham ultimately does it because he knows it is what Hashem wants but it is still a very bad thing in his eyes and very painful.
I think we see multiple times in Tanach and Chazal that Avraham Avinu viewed Yishmael as his son, and loved him very much. Avraham had a very hard time giving Yitzchok such primacy over Yishmael. Such cruelty to his flesh and blood was very difficult even though it was the right thing to do.
A parent that has to take a hard-line with a rebellious child for the good of the rest of the family can surely look to Avraham for inspiration.