It will get better, man. Kids are awesome.
It really kinda sucks, though, because you want to keep them safe, and keep all the happy and the giggles and etc..., but you also want them to be strong enough for the world ahead of them, so you can't coddle them or do everything for them, because they will become dependent on you. Like, my cousin has a 7- year old who still talks like a baby and is super, super spoiled and it's ridiculous! But you can't just leave them to fend for themselves because then they'll die, and THAT'S no good either! It's a fine line, you know?
I wish they came with a manual.
Although, my son and wife and I just got back this afternoon from the Hill Aerospace museum with all the airplanes and everything, and it was a blast! (And free parking / admission, too! Sweet!)
Anyway, manage your sleep and get some mental health days by using a babysitter once in a while, and you'll do great, man.
Congratulations!