Love your kids with everything you've got. Let go of your ex, as best you can, and focus on the impact your love is having on your kids. Stay true to that value and you will always choose the high road.
If I had it to do all over again, I'd probably argue with the counselor and my ex-wife and negotiate something a bit more even. You will be advised not to do this. "It's easier for everyone if you just accept this plan, it's been working for families for years."