My solution to having to juggle kids and work - tubal ligation. I had one back in April and I am liberated! I will never have to worry about accidentally getting pregnant with a brat!
It's good to know what you want. Many women feel social pressure to have kids, but there is no shame in knowing you don't want children and taking the necessary steps to ensure you won't accidentally get pregnant.
However, I don't agree that mothers can't be successful career women. Someone once said, "A woman can have it all, just not all at once," and I believe that. From my early 20s to mid-30s I devoted myself to raising my kids and creating a loving home environment for them. I was a girl scout leader, school volunteer, sunday school teacher, etc. Now that my kids are older and my husband's retired and at home, I'm going for the career with no hesitation or regrets. By the time I'm even considered for partner, my kids will be in law school themselves.