what do you wish you knew/someone had told you before having your baby ?

m
For me i had no clue that literally everything I own would at some point be covered in pee poop baby spit up or leaking milk. I also wasn't prepared for my lo sleeping for only 20-30 minutes at night. Two hours or an hour yes but these 20 minute bursts are super hard. 
Knowing these things wouldn't have changed my mind about having my lo but I  maybe would've invested in a cheap comforter I don't care about as mine now is covered in every imaginable body fluid.