Will He Ever Sleep Again???

Now that Christopher has graduated from his crib to the big boy bed, I don't think we are ever going to sleep again. After a week of all three of us being up all night, I have installed an eyehook lock on Christopher's door to keep him inside. After 30 minutes of non-stop screaming and crying, I settled him down and left again. After another 30 minutes of the crying, I put Nicholas to bed and then sat down next to Christopher's bed until he fell asleep. Why was I able to be tougher with Nicholas? Was I tougher, or am I just imagining it? When will I ever get to sleep again?