how on EARTH do you make your baby sleep without you?

My baby won't sleep on her own. She needs to be rocked or bounced in order to fall asleep. Then the second I put her down she's wide awake or screaming. Unless it's the rock n play or she's swaddled, or she's like dead asleep. But even then it doesn't last long. 
How can I get her to fall asleep or stay asleep without needing to be rocked or held the entire time? It's getting to the point where I won't get anything done all day. She's 10 weeks so I don't really want to let her cry it out yet and plus it doesn't do much but just make me go deaf from the screaming.