To juggle the role of being a mother, wife, and maintain a job. I returned to work when my daughter was 2 1/2 months old. I cried every day for the first couple weeks. I hated the thought of leaving her. I still hate the thought of leaving her. But I remind myself that I'm helping support my family, so I'm leaving her for a good cause.  
 
My daughter is now 15 months old. She totally adores her babysitter. The highlight of my day is when I pick her up from the sitters & she comes running to me with open arms. 
 
I think the main things you should keep in mind when returning to work are: 
* Please remember to make time for yourself. I made the mistake when I first returned to work of trying to wear the "superwoman" cape. Meaning I thought I could work full time, spend time with my family & still manage to get all of the household chores done every day. I wore myself out. Give your husband some daily "chores" to do. Make sure that it's a group effort, not a race to see what you can get done. If you forget to take care of you, you're no good to anyone else. 
 
* Guilt is a part of parenthood. Working mom's feel guilty for leaving their baby & working. But I've also learned that many stay at home moms wonder if they should be out working. One thing I've learned about being a parent is that you're never 100% sure you're doing the right thing. just do your best, everything will fall in place. 
 
* plan ahead. 
I try to get all of my grocery shopping & things of that nature done on the weekend. Instead of trying to get it done after work or during my lunch hour. This keeps my lunch hour free, which gives me an hour to myself every day. I spend this hour either taking a walk, or enjoying a nice meal with coworkers. It's important to have that time to relax. Remember, if Mama's crazy, the family will be too!