What's your parenting Achilles Heel?

Example: I'm awful when it comes to the kids waking up throughout the night. It's not so much that I don't deal with it well, cause I do, but more that the prospect of it causing significant anxiety in me.

It's something I'm working on every single day, but still something that gets the better of me at times, especially now I've got a school age kid who's coming home sick every few days.

Where do you feel like you need to improve as a parent?