Lessons from Parenting?

Hello friends!  Kirsten and I have been asked to facilitate a seminar/discussion for parents at an upcoming family camp (InterVarsity Family Camp). Our camp director has suggested a few questions for discussion such as: 


What is the biggest struggle with parenting?  What practical ideas have helped you the most with parenting?  What has been the biggest shock with parenting?  What do you wish you had know earlier?  Where have you seen God show up as you've raised your children?  How has parenting impacted your marriage?


We would love to hear your responses to some or all of these questions. Or if you have suggested topics/questions that would be great to hear too. Thanks!