I've been sober for a long time, and my children are young adults now, they were 7 & 9 when their mother divorced me and I entered AA.
It does get easier, especially if we stay sober, but there will always be the challenges of co-parenting. I've found the greatest relief to be the relationships I've made in recovery, other parents who struggle with similar situations that I can talk to and consult with to make sure I'm making good decisions too.