Working moms

I go back to work tomorrow. I'm happy and sad. My 6 weeks is up and I don't wanna leave my baby but I do miss being at work. My SO makes enough but the extra money is always great and I've never not worked since the age of 15 so I just can't see myself being a SAHM. For the moms who've taken their time off and then went back to work, how hard was it for you to transition from being with your LO everyday to just being with them after work?