You want a formidible challenge? Try writing an amusing blog post about your kids while watching a movie like (the fantastic) Gone Baby Gone.
I'll tell you something else-- you'll never be so happy that your 2-year-old woke up in the middle of the night crying out for a hug. Be prepared for her groggy confusion and suspicion at your eagerness.
Also, be ready to feel like an ogre --and not the lovable Shrek kind-- for knowing you'll be sticking to your guns on No Dessert the next day, consoling yourself only with the fact that you have to do it to keep the kids off the crack pipe. Or something like that.
I'm not that easily manipulated, Affleck.*
* It's well-known that both Afflecks are firmly in the pocket of Big Toddler and Big Cookie.