A year later, both children are still extremely demanding. It's all about setting limits and knowing when to bend them, like last night when my daughter finally figured out how to wake herself up in the middle of the night to go poop. That's one of the rare sleepless nights that's worth it.
Otherwise, knowing how you sleep is also important. I fumble around in the dark, use extremely dim lights, and have no problem letting my kids sleep with me for an hour or two. A full night's sleep is vital. I'm really good at falling asleep after giving a bottle because I make them before going to bed, turn on no lights, and keep my eyes closed once I'm in the rocking chair.
> You have to add in a boss who spends 2/3rd of the time you're home screaming at you to the mix.
You really need to learn modern discipline techniques. We use 1-2-3 magic. When our toddler screams at us, it's usually an immediate "ONE!" If it's really bad, there's a time out with no counting. It really works.
I even help my wife learn by shouting "ONE!" "TWO!" ... when I'm out of the room and hear my toddler get tough. The 1-2-3 magic technique requires a lot of disciple to not get sucked into a toddler argument.